Before diving into spicy foods, it's crucial to understand how heat is measured. The Scoville Scale rates peppers and spicy foods based on their capsaicin content, the compound responsible for that burning sensation. Bell peppers register zero Scoville units, while jalapeños range from 2,500 to 8,000 units. Habaneros jump to 100,000-350,000 units, and the infamous Carolina Reaper exceeds 2 million units.
Start with milder options like poblano peppers (1,000-2,000 Scoville units) or banana peppers (0-500 units). These provide gentle heat while allowing you to appreciate the pepper's natural flavors. As your tolerance builds, you can gradually work your way up to jalapeños, serranos, and beyond.