I originally got my recipe online (Habanero Pepper Jelly at Allrecipes website), but have adjusted a lot of that recipe to suit my preferences. I also seem to tweek each time I make it.
1 1/2 cups apple cider vinegar
6 cups white sugar
5 oz Certo liquid fruit pectin
3/4 cup grated carrot
2 cups diced peppers
The pectin usually comes in two 3 oz packets, but I've found that using all 6 oz results in jelly that is a bit too thick for my preference, but it's probably still ok for most people.
The 2 cups of diced peppers can be any combination of peppers that you like. My last batch was 1/2 cup each of habaneros, jalapenos, anahiem and poblano. It was pretty hot, but my family really liked it. If you want a more mild version, I would recommend increasing the anahiem or poblano ratio, or even using bell pepper. Just keep the total amount of peppers to 2 cups.
Cook the vinegar and sugar in a sauce pan over medium heat until the sugar has dissolved.
Add the carrots and peppers, and simmer for 5 minutes.
Add the pectin and bring to a boil for 1 minute. Stir constantly. Skim any foam from the jelly that may develop.
That's all there is to it really. It's now ready to go into your canning jars. The recipe makes 8 half-pint jars. I'm assuming you know what to do as far as canning/preserving them.
Also, I find that after I remove them from the hot canning bath, the pepper chunks tend to float to the top. While it's cooling, every 15 minutes I flip the jars so that the pepper pieces even out throughout the liquid.
Good luck, and enjoy