Lemongrass, kaffir lime leaves, lime zest, shrimp shells and ginger: these tangy, pronounced flavours come together perfectly in this Thai-inspired soup. The perfumed broth is strained before the addition of a handful of aromatic ingredients, including a welcome dose of acidity from fresh tomatoes. Sweetened with coconut milk, this hot and sour soup is brightened up further with pieces of pineapple and a generous drizzle of lime juice. A touch of acidity that helps to neutralize the spicy flavours.