How hot is that chile pepper? Fresh peppers get hotter as they age; they will achieve a more reddish hue and sometimes develop streaks in the skin.
There are 60 varieties of chile peppers, many of which are used in Mexican cooking. Handle them with care. When handling the spicier kinds, gloves are recommended. Always wash your hands with soap and warm water before touching your eyes.
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Be forewarned: This lasagna is properly hot. If you "don't do spicy food," feel free to cut down the amount of chipotles en adobo, or to omit them entirely.