Instructions: Peel, slice and boil courgette 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 a full boil, stirring frequently. Add certo; boil hard for 2 minutes. Skim off any foam; pack in hot steralized jars.

Seal. Store in refrigerator for short periods of time; in freezer for long-term storage.

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