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Adding dairy to a large pot of soup before putting it in the refrigerator causes separation and graininess during storage. Heavy cream reacts poorly to long cooling cycles and subsequent reheating. Leave the cream out of the main pot entirely if batch cooking for the freezer. Heat the cream separately before stirring individual portions at the table.
Rice absorbs liquid continuously while sitting in cold storage. Storing this soup with the rice already cooked inside yields mushy grains by day two. Cook the rice separately and drop it into individual bowls just before ladling hot broth over the top. Alternatively, substitute half the rice weight with rinsed lentils if planning to freeze the entire base. Glass storage containers prevent staining from curry powder and seal better than plastic lids. Reheat thawed portions slowly over medium-low heat in a heavy-bottomed saucepan to prevent scorching the bottom.
Curry powder requires a direct interaction with fat to release its full aromatic potential. Toast the flour and curry powder mixture for the full five minutes specified in the method. Skipping this step leaves a raw, pasty starch flavor in the broth. Dice the apples uniformly so they dissolve into the simmering stock rather than remaining hard chunks. Cut the chicken thighs into uniform half-inch cubes to ensure they cook evenly within the fifteen-minute simmer window.