You will probably already have a selection of herbs and spices in your store cupboard, so do not be daunted by the length of my list. This variety is necessary if you intend to make your own curry powder. Buy herbs and spices from shops with a fast turnover to ensure freshness. Buy in small amounts, say 50 g/2 oz sachets, and keep them in airtight jars hidden from the light. When adding them to dishes, keep the jar away from the steam to prevent the contents getting damp.