If you've never prepped a jalapeño pepper before, here is a detailed breakdown: 1. If you have latex/neo/nitrile/poly gloves, put them on! This is extra protection to make sure you don't burn yourself with residual pepper left on your hands and under your nails. 2. Slice the jalapeño pepper in half lengthwise. Use a sharp paring knife to slice the membranes away from the inside edge of the peppers. 3. Turn the pepper over and give it a few taps to get out any lingering seeds.