To freeze fresh jalapenos, wash and remove the seeds from the peppers, and cut them as desired. Flash freeze the jalapeno pieces on a cookie sheet. Store the individually frozen pepper pieces in a freezer bag.
Wear gloves when handling jalapenos to avoid skin irritation. For best results, start with crisp jalapeno peppers without any blemishes. Cut off the stems before removing the seeds. You can either leave the jalapenos whole or cut them into small pieces, depending on how you plan to use them.
Flash freezing prevents the jalapeno pieces from clumping together in the freezer. Spread them out on a baking sheet, and leave them in the freezer just long enough for them to start freezing. Label the freezer bag clearly.