Kafta sandwich

Ingredients

• 1 green onion/scallion
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• 1 Tbsp. sake
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• 1 Tbsp. sugar
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• ½ cup (120 ml) dashi
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• ½ medium onion
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• 2 Tbsp. mirin
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• 2 Tbsp. pickled red ginger
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• 2 Tbsp. soy sauce
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• 2-3 Onsen Tamago (similar to poached egg) (Recipe) (optional)
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• ¾ lb (12 oz
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• 340 g) thinly sliced ribeye or chuck (See Note)
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