or float them on top of the soup. This recipe requires fish bones and prawn shells. Next time you cook fish or prawns, collect the bones and shells and freeze until needed.

Discard the zest and thyme sprigs. 2. Working in batches, transfer the soup to a food processor and pulse until coarsely chopped. Rinse out the pot. Set a food mill fitted with a coarse blade over ...

By Melissa Clark Eric Kim’s scallion-oil fish.Credit...Linda Xiao for The New York Times. Food Stylist: Monica Pierini. Who isn’t stirred by the ease and brevity of a three-ingredient recipe?