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Posted on Oct 6, 2008 in Bento, Curry, Decorative, Equipment, For Kids, Gluten Free, Meat, Onigiri or Sushi, Potatoes, Rice, Tips | 15 comments

Metal bento boxes & Shepherd’s pie

Metal bento boxes & Shepherd’s pie

Silly Domo-kun inarizushi bento lunch
Domo-kun lunch from cookbook

(ADDENDUM: Please accept my apologies for the downtime Lunch in a Box has been experiencing lately. My hosting company has had an unprecedented number of issues lately, and I will be switching providers shortly.)

I’ve seen fun little aluminum bento boxes for children in stores from time to time, but have always been puzzled by their lack of watertight lids. Why use metal boxes that leak? I asked the moms at Bug’s Japanese immersion preschool and searched through my Japanese-language bento cookbooks to find some answers.

In Japan, evidently preschools have special ovens to warm up the children’s metal boxes in the winter, but because most of the cute aluminum boxes lack watertight seals, Japanese parents have had to get creative with how they pack lunches in them. Benefits of metal boxes include being able to cook food directly in the box (when using an oven-safe container, also true of tempered glass boxes), the absence of health concerns associated with packing food in plastic, and lighter weight than glass boxes. Drawbacks include not being able to microwave metal containers and potential leaking caused by the loose, non-secure lid.

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Shepherd's pie bento lunch for preschooler

Contents of preschooler bento lunch: Mini Shepherd’s pie (seasoned ground beef with vegetables, topped with mashed potatoes and melted Cheddar cheese; simple web recipe here), and a side dish container with a black Mission fig, Concord grapes, and different colored cherry tomatoes.

Speed Tip: When you’re making dinner, make a little extra that can be saved and eaten for lunch (either as is or as a Leftover Remake). The Shepherd’s pie didn’t take extra time when cooking — I just separated out a little, assembled in lunch-friendly containers, and threw them into the fridge for later.

 Morning prep time: 8 minutes, using pre-made Shepherd’s pie from dinner earlier in the week. In the morning I grated some cheese and ran it briefly under the broiler in my convection toaster oven to melt the cheese. I let it cool before putting the plastic lid on top. (Read on for details, tips for using metal bento boxes, sample pages from Japanese bento cookbooks, and additional lunches.)

Stainless steel food containers  Anpanman snack containers

Packing: I packed the little Shepherd’s pie in a 220ml stainless steel tin from Daiso (similar containers can be found at Kids Konserve). Technically the container wasn’t recommended for full-on cooking in case of warping, so in the morning I just ran it briefly under the broiler to melt the cheese. (If I had an oven-safe aluminum bento box I could have cooked with it. I’ve also made mini Shepherd’s pies in thick aluminum baking cups for bento lunches, and have even seen them made in lined muffin tins.) The moms at Bug’s preschool who used the aluminum boxes in Japan say that they don’t pack anything moist inside that could leak. When packing a lunch that’s going to be warmed, be sure to pack anything cool in a separate side dish container. I packed the fruit in a 150ml Anpanman snack container. (Click any photo for a larger view.)

Pop culture: Anpanman and Baikinman are the respective hero and villain of popular Japanese cartoon series Anpanman. Baikinman is short for “Bacteria Man”, and he battles Anpanman (“Bean Paste Bun Man”) who helps the starving by letting them eat part of his head. What’s not to like? ;-)

Verdict: Good over time. Bug ate all of the shepherd’s pie at preschool, but didn’t touch the sidecar with fruit until after school.

Sample lunches for non-watertight metal bento boxes

As you can see, my Japanese-language bento cookbooks show aluminum boxes filled with reheatable foods like gratin dishes (potato or pasta, baked in the box itself), casseroles, donburi dishes (a sauced main dish served right on top of a bed of rice), okonomiyaki cabbage pancake, pizza, or even curry and rice using a modified “rice lid” packing technique.

Packing curry in a non-watertight metal bento box

The modified rice lid packing style is intriguing at first glance: Pack a shallow layer of rice on the bottom, then a layer of curry, then another layer of rice (illustrated above). But while this technique lets you pack liquidy curry and rice without leaking, the rice winds up soaking up the curry and gets soggy. I think I’ll stick with thermal lunch jars, thermal food jars, or a donburi bento box for packing curry instead.

(The two cookbook photos above are from Youchien no Obento Zensho: Enji ga Yorokobu Idea ga Ippai! “Kindergarten Bento Compendium: Lots of ideas to make kids happy!”: See my write-up of children’s Japanese bento books for the full review. The Domo-kun lunch photo at the beginning is from a cookbook from NHK: Kodomo ga Yorokobu Obento “Bento lunches that make kids happy”, which has recipes and tips for making kyaraben food art lunches with NHK TV cartoon characters. The Domo-kun part of the lunch is made out of inarizushi sushi rice stuffed into seasoned abura-age fried tofu wrappers, with black bean eyes, and carrot + kamaboko fish paste mouth. The trick to keeping the bean “eyes” in place is using the big end of a chopstick to poke two holes in the inarizushi first, then stuffing the holes with the beans. In Amazon Japan, you can translate the page into English by clicking on the link in the upper right. They ship books internationally.)

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Shepherd's pie bento lunch for preschooler (2)

Contents of preschooler bento lunch: Corn on the cob, shepherd’s pie, cherry tomatoes, steamed broccoli flavored with bottled soba broth, and a 100% juice mini jello cup.

Morning prep time: 7 minutes, using leftover corn and shepherd’s pie that I packed in the box when cleaning up from dinner. In the morning I just cut the corn to fit the box and quickly prepped the broccoli.

Packing: Nothing too special on this lunch, packed in a 350ml subdivided box from a larger Lock & Lock lunch set.

Verdict: Big thumbs up. Bug demolished everything at preschool, no leftovers.

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For a study in contrasts between my “speed bentos” and a real kyaraben food art lunch for kids, check out the fanciful Anpanman lunch that one of the Japanese moms at Bug’s preschool made for her daughter on a school field trip to the zoo this summer. So if you think I’m Martha, it’s all relative! (Thanks for the photo, E!)

Baikinman bento lunch for preschooler

Contents of E’s preschooler bento lunch: Stuffed onigiri rice balls shaped like Baikinman and Anpanman (made according to the Japanese-language directions here). The Baikinman face (left) is made with rice, nori, kamaboko, and sliced cheese. The Anpanman face (right) is made with rice, orange-colored soy paper (mamenori), a cherry tomato nose, carrot cheeks, and nori eyes/mouth. Broccoli, a sausage segment, cherry tomatoes, grapes and a couple of orange segments round out the lunch.

Morning prep time: About an hour. The mom at Bug’s preschool who made this was quick to say that she usually makes speed bentos for her four-year-old’s lunch, but that she went all-out on this one because she knew other parents would see it on the zoo outing. There’s a lot of societal pressure among Japanese mothers to make these kinds of lunches for young children…

Packing: She used reusable silicone baking cups to keep everything separate, and packed the lunch in a metal bento boxes without a watertight lid (notice the absence of any wet foods that would leak).

Verdict: Not surprisingly, this lunch was the hit of the kids’ zoo field trip, and everyone wanted to have a look. I’m not sure if E’s daughter ate everything or not, but she sure looked happy digging into it at the zoo!

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  1. My first bento box was a aluminum box I found at an Asian Market in Plano, Tx. It’s more of a Man-sized box as it holds much more food than I could eat. It’s a double decker box, with the top plastic part having both a divider and a plastic lid. The name of the box is LL Club. It also came with plastic chopsticks two belts, one large and one small and a lunch bag. I like to put my food that needs to be warm in the bottom part, and cooler foods in the top plastic part. About an hour before lunch I take the plastic part out and replace the aluminum top and set the whole box on my coffee cup warmer, you know the little mini hot plate to keep you cup warm. It heats my lunch up nicely… It even re-grills a grilled sandwich! I really wish I could find a smaller one and hand this one off to Lyvvie, it would be great for her husband. You can see it on my blog, but you may have go go way back into September.

  2. A possible way to get around the non water tightness of the metal boxes is to test some glad press and seal around the edge before putting the lid on.

  3. @2 from Katie: You know, I’ve had mixed results with Glad Press & Seal. It does provide a pretty good seal, but it’s not infallible — it still leaks when a really liquidy dish is tipped on its side. I wrote a little about it here.

  4. @1 from Judith Cruzan: Wow, what an interesting-looking combo bento box! I found your blog entry with photos. I love your idea of warming it on your desktop coffee cup warmer — so inventive! Thanks for the informative, helpful comment.

  5. We found a Pokemon aluminum snack size bento at Marukai in Honolulu (included on your Bento Locator). I got it because it was so cute, but since it’s too small for 4 year old lunch, and not water/air tight, I have yet to use it! Interesting to discover that aluminum bento have a purpose (heat or cook in oven) besides just being cute. I would have never guessed. Thanks Biggie.

  6. I got one of the small metal containers you picture above with the plastic lid when I was at Daiso in Richmond Vancouver, it’s about 2″ x 3″ and perfect for packing sardines in 4 y.o. bento.

    I love that it’s metal so resembles a sardine can, and also does not retain smell of fish as much as a plastic container would. Sardines (straight from the can, water packed) have become my son’s favorite meal and I think one of the healthiest things he eats!

  7. You say that there is a lot of pressure on Japanese moms to make impressive bento, but I had read that bento was quite old fashioned in Japan right now, and instead everyone wants to eat American style food. Is it just pressure on Japanese-American moms as bento grows more popular here? Or is bento making a comeback in Japan also?

  8. I’ve been curious about shepherd’s pie and packing it… I’ve brought it a few times and find I don’t like the cheese after it is melted then “congealed”/re-hardened. Is it just me?

  9. Do you have any recs for where I can find a non-plastic, watertight bento box, preferably with a stackable insert? One that won’t break the bank?

  10. Domo-kun is so cute! Our local Target is having a huge Domo-kun based promotion for Halloween. There is a giant stuffed one hanging from the ceiling as soon as you walk in the door. I’d ask for it, but I’m sure it’s been claimed already. You’ll probably see them on ebay, too! They are carrying various Domo-kun accessorized items as well. No boxes, though. :(

  11. Foil cupcake liners (especially the heavier ones (from reynolds I think – Target carries them) that come in shapes like hearts and stars are great for things like shepherd’s pie – I did this a couple weeks ago and they were perfect for putting in the bento boxes :) Really great if you have a toaster oven at the office to heat it :)

  12. Wow! 100% juice jello cups?!?!?! I’m amazed! Where do you find such a treasure?!?!?!?

  13. Hi Biggie

    I have grown into your ardent fan over past few months.

    In India, ‘lunch boxes’ or ‘ lunch carriers’ are common through ages. But food art is completely new to us, hence thanks for opening a whole new world for me.

    Though I pack my son’s lunch pretty early in the morning, and I think his lunch is much appreciated among friends, but definitely not strictly Bento.

    We use lot of aluminium foils for keeping things fresh and separated. But small containers come in plenty of shapes and sizes, which is good fun.

    Thanks for refreshing my mornings everyday.

    Regards

    Arundhati

  14. Hi Biggie,
    I have been haunting your website for a while, I love it! It is what introduced me to bentos and now I’m an addict. I am one of those people who try to avoid using plastic for food. I have done an extensive search for stainless steel bento items and have started gathering quite a nice collection. I found some great stainless steel bento boxes on the Pearl River website in various sizes. I especially like the round ones that have the second level insert (they actually seal fairly well). Also, I have found small sauce cups with lids on Amazon and I use small glass bottles with lids for sauces from Specialty Bottle. They also have some nice sized food grade aluminum boxes with lids that seal very well. You can see a picture of some of my collection on my blog at jewelmaker.livejournal.com/
    I hope this helps some of your readers who are looking for non plastic bento items.