Consider keeping the jalapeno seeds and membranes, otherwise the results will be good, but mild. Also, remember to use disposable latex gloves when handling peppers. I can't guarantee the recipe should you reduce the sugar because I've never made it otherwise. Sure-Jell Premium (yellow box) requires a certain amount of sugar to gel properly. (I do have another jalapeno jelly recipe, recipe #460242. It's considerably less work and equally divine.) BTW, should any recipe fail, see recipe #151544.