The main type of capsicum is shaped like a bell and has four lobes, although long, tapered capsicums are becoming more popular. These are closely related to hot chillies but are larger and taste sweet. Red capsicums are sweeter than green capsicums, but they soften faster. Orange capsicums are sweet and crisp while the yellow capsicums have a mild flavour. When you cut a purple/black capsicum the inside is coloured green.
Capsicums are an excellent source of vitamin A and C (red contain more than green capsicums). They are also a good source of dietary fibre, vitamin E, B6 and folate. The sweetness of capsicums is due to their natural sugars (green capsicums have less sugar than red capsicums).
Store capsicums in the crisper section of your fridge. Ordinary plastic bags cause capsicums to sweat, so only use fridge storage bags. Capsicum should be used within five days.