Anyone who's ever had some hot Thai peanut sauce knows that the chilis and peanuts can live happily together — as they do in Instant Regret Peanut Butter ($12). This surprisingly spicy spread is made with King Naga chilis, peanuts, oil, and a little Habanero chili extract. How hot is it? Well, it measures 12 million SHU on the Scoville Scale, or way hotter than the ghost chili, and approaching pure capsaicin — which is pretty much the hottest thing on Earth.