The Scoville Heat Unit (SHU) scale measures the concentration of capsaicin in peppers and spicy foods. This scale serves as your roadmap for gradually increasing heat tolerance. Bell peppers register zero SHUs, while jalapeños range from 2,500 to 8,000 SHUs. Serrano peppers jump to 10,000-25,000 SHUs, and habaneros can reach 100,000-350,000 SHUs.
For beginners, start with foods in the 1,000-5,000 SHU range. This includes mild hot sauces, poblano peppers, and lightly spiced dishes. Once comfortable at this level, gradually move up the scale in increments of 5,000-10,000 SHUs. This methodical approach prevents overwhelming your palate and ensures steady progress.