Add the sweet potatoes, cleaned leeks and plenty of ginger to the clear broth and bring it to an aggressive boil.

WSJ: Amaryll Schwertner's Poached Halibut in Dashi With Leeks, Sweet Potatoes and Sesame Seeds | Slow Food Fast

Add the torn black kale when the potatoes are almost cooked through.

WSJ: Amaryll Schwertner's Poached Halibut in Dashi With Leeks, Sweet Potatoes and Sesame Seeds | Slow Food Fast

Add the chili bean paste, the spices, the potatoes, the soy sauce and the beer, cover the pot and let it boil.

WSJ: Danny Bowien's Henan Chicken Stew | Slow Food Fast

Other passers-by add potatoes, onions and so on until the soup really is delicious, and is served to all.

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