Step 1

Sterilize 6 (8 ounce) canning jars and lids according to manufacturer's instructions. Heat water in a hot water canner.

Step 2

Place red bell peppers, green bell peppers, and jalapeno peppers in a large saucepan over high heat. Mix in vinegar and fruit pectin. Stirring constantly, bring mixture to a full rolling boil. Quickly stir in sugar. Return to full rolling boil, and boil exactly 1 minute, stirring constantly. Remove from heat, and skim off any foam.

Step 3

Quickly ladle jelly into sterile jars, filling to within 1/4 inch of the tops. Cover with flat lids, and screw on bands tightly.

Step 4

Place jars in rack, and slowly lower jars into canner. The water should cover the jars completely, and should be hot but not boiling. Bring water to a boil, and process for 5 minutes.