2 lb. zucchini (lg. size works well)
Water to cover
1/2 c. butter
3 c. sugar
3 med. lemons or 2 lg. lemons (1 c. juice & 3 tbsp. rind)
1 pkg. Certo

Peel, slice and boil zucchini in water to cover until tender. Strain. Cool. Mash or puree until smooth. Place in large saucepan; add butter, sugar, lemon juice and rind. Bring to full boil, stirring frequently. Add Certo; boil hard for 2 minutes. Skim off any foam; pack in hot sterilized jars. Seal. Store in refrigerator for short periods of time, in freezer for long term storage. Yield 6 cups.