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ingredients:
- 5 ounces thinly sliced beef
- 2 ounces lettuce
- 3 tablespoons ponzu soy sauce
- 3 1/3 cups water

step 1:
Pour the water into a pan. Heat the water to 160 °F and add the beef slices one by one. After each slice changes color, remove and drain in a colander.
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step 2:
Tear off the lettuce into bite-size pieces and put on two plates. Put the beef on the lettuce and pour the ponzu soy sauce over each plate.
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comment:
When you cook the beef in hot water of 160 °F, the meat does not shrink too much, retains its good flavor and is delicious.