First, prepare your peppers: Wear gloves to prevent your fingers from feeling burned. For less spicy pickles, use a paring knife to remove the jalapeño membranes and seeds before slicing (this is a lot of work, so I just pulled out the larger membranes from my sliced pickles). Slice the pickles thin with a mandoline or chef's knife. If you're still concerned about the spice level of the pickles, run the sliced jalapeños under running water in a colander to try to knock off any remaining seeds. (Beware, those pepper fumes made me cough.) Slice off the top of the bell pepper and remove the seeds and membranes. Chop the bell pepper.