WHY THIS RECIPE WORKS: If any food speaks of summer, the English dessert called summer pudding does. Ripe, fragrant, lightly sweetened berries are gently cooked to coax out their juices and then packed into a bowl lined with slices of bread. The berry juices soak and soften the bread to make it meld with the fruit. We set out to master this summertime classic.
Instead of lining the mold with bread and then filling it with berries, we opted to layer bread (cut out with a biscuit cutter) and berries together in ramekins; this way, the layers of bread on the inside would almost melt into the fruit. Combining the berries—we used strawberries, raspberries, blueberries, and blackberries—with sugar and lemon juice, and gently cooking the mixture for just five minutes, released just the right amount of juice and offset the tartness of the berries. Fresh bread became too gummy in the pudding, but day-old bread had just the right consistency. We used potato bread; its even, tight-crumbed, tender texture and light sweetness was a perfect match for the berries (challah makes a good substitute). To ensure that the puddings would come together and hold their shape, we weighted and refrigerated them for at least eight hours.