When Tesco said "firey" they weren't lying!
Extremely hot - use sparingly with caution unless you're a fan of the heat! At around 50k-100k on the Scoville heat scale these chillies are much hotter than a Jalapeño (3-8k) - had I known / read this I probably wouldn't have opted for this product, but you live and learn! Hopefully this review helps others!
Really hot on the spice level adds a kick to the dish