Sissinghurst Castle Lemonade Delicious for hot summer days Makes 6 glasses. Ingredients: 3 unwaxed lemons; 75 gramme granulated or lump sugar: 750 millilitres water. Chop the lemons and put them in a food processor with the granulated or lump sugar. Process until you have a fairly fine pulp. The processing ‘pulls’ the natural oils from the lemons. Put the mixture in a glass jug and stir in the water. Chill overnight before use. Serve with ice cubes and a sprig of mint or borage. This lemonade will keep for two to three days in the fridge. To serve: Use ice cubes and/or mint leaves or borage flowers and leaves. Mix, Stir & Smile!