A Japanese-style, root-veg beef soup that slow-finishes in your thermos, so itās piping hot when you break for lunch.
Ā
š Ingredients
For a 12 oz (0.36 L) Zojirushi Stainless Steel Food Jar
- 1 tsp vegetable oil
- 115 g beef stew meat, bite-size pieces
- ¼ cup onion, cubed
- ¼ cup carrot, peeled & cubed
- ½ cup daikon radish, cubed
- 240 ml beef stock
- ½ tsp caster sugar
- ½ tsp soy sauce
For a 17 oz (0.5 L) Zojirushi Stainless Steel Food Jar
- 1 ½ tsp vegetable oil
- 170 g beef stew meat, bite-size pieces
- ā cup onion, cubed
- ā cup carrot, cubed
- ā cup daikon, cubed
- 320 ml beef stock
- ā tsp sugar
- ā tsp soy sauce
š² Instructions ā step-by-step

Pre-heat the jar
Add boiling water, close the lid and let it standāessential for truly leak-proof lunch jar recipes.

Sear the beef
Warm the oil in a small saucepan over medium heat. Brown the beef for two minutes; caramelising now layers in depth later.

Sweat the veg
Tip in onion, carrot and daikon; stir for one minute so everything picks up savoury fond.

Build the broth
Pour in beef stock, sugar and soy. Bring to a gentle boil, skim any foam, then simmer 15 minutes.

Thermos time
Empty the hot water, ladle the soup to 1 cm below the inner ridge, fasten the lid and tuck it into your bag. The vacuum insulation will coax the meat tender over the next 3ā6 hoursāperfect for healthy lunch recipes for thermos fans.

Serve & savour
Season to taste with salt and pepper just before eating. Consume within six hours for peak flavour.
š” Tip or Advice
- Add zing: I often slip a shaving of fresh ginger in step 4 for a subtle, warming kick.
- Veg swap: Swede or parsnip work nicely if daikon is hard to find.
- Kid-friendly tweak: Halve the soy and sugar, and toss in sweetcorn kernelsāone of my go-to hot food ideas for kids school lunch.
š¦ Best used with
- Zojirushi Stainless Steel Food Jar 17 oz when appetite (or sharing) calls.
š Linked collection
Level-up lunchtime with the Vacuum-Insulated Hot Lunch Set and grab a matchingĀ fold-flat spoon so youāre never without your trusty utensil on the go.