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1
Following manufacturer's instructions, preheat water bath to 167u00b0F (75u00b0C). When water is ready, add shell-on eggs and cook for 13 minutes. Transfer to an ice bath to chill. Eggs can be refrigerated, shell on, for up to 2 days.
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2
Fill a large pot with water and bring to 167u00b0F (75u00b0C). Add shell-on eggs and cook for 13 minutes, adjusting heat as necessary to maintain temperature. Alternatively, transfer hot water to a
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3
, add eggs, and cook for 13 minutes, using extra boiling or cold water to adjust heat to maintain 167°F. A small fluctuation of a degree or two up or down is okay; just do your best to maintain the temperature the entire time. Transfer eggs to an ice bath to chill. Eggs can be refrigerated, shell on, for up to 2 days.
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4
While eggs cook, bring mirin to a simmer over medium heat in a small saucepan. Add sugar and stir to dissolve. Add soy sauce, stir well, and bring to a simmer. Remove this
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5
mixture from heat and transfer to refrigerator to cool.
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6
When ready to serve, combine 1/4 cup kaeshi (soy-mirin) mixture with 3/4 cup dashi. Any additional kaeshi and dashi can be reserved for another use. (Mixed together, as in this recipe, they make an excellent cold dipping broth for chilled soba or udon noodles.)
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7
Working with one at a time, carefully crack eggs and peel off enough of the shell to slide the egg out into a small mixing bowl. Using a spoon and/or a clean paper towel, carefully separate soft-cooked egg from any loose whites. Slide each egg into a small serving bowl, pour broth around it, and garnish with scallions. Serve.
