We found that the Tezpur variety (Capsicum frutescens var. Nagahari) of Indian chilli contains maximum capsaicin and dihydrocapsaicin contributing to a pungency of 855,000 SHU, which seems to be the hottest chilli known so far.
— RITESH MATHUR, R. S. DANGI, S. C. DASS, R. C. MALHOTRA