Chillies come in many colours, in hundreds of varieties and in different degrees of intensity (‘hotness’) but few are commercially available. Their ‘heat’ varies, depending on the seeds, how they are grown, the variety, the season and many other factors. You will need to experiment with different varieties to find the right degree of ‘heat’ to suit your taste.
Chillies are the seed pods of the capsicum plant and can be obtained fresh, dried or ground. Removing the seeds, the source of most of the chilli ‘heat’, reduces the heat intensity but still leaves much rich flavour.