---
title: 'Blackberry jam'
url: 'https://recipes.spfinch.com/recipes/blackberry-jam'
markdown: 'https://recipes.spfinch.com/recipes/blackberry-jam.md'
date: '2012-08-13'
description: 'Certo site Makes 5 jars Ingredients 2 lb (900g) blackberries 3 lb (1.4kg) sugar ½ bottle Certo Method Use only fully ripe fruit. Crush thoroughly. Measure sugar and 2 lb. prepared fruit into a large preserving pan and mix well. Bring to a full rolling boil and boil over the hottest heat. Stir con…'
taxonomy:
  category:
    - jam
    - vegan
---

# Blackberry jam

## Blackberry jam

  ![folder](https://recipes.spfinch.com/user/themes/recipes/images/folder.svg) [jam](https://recipes.spfinch.com/recipes/category:jam) | [vegan](https://recipes.spfinch.com/recipes/category:vegan) ![blackberry-jam](https://recipes.spfinch.com/user/pages/02.recipes/blackberry-jam/blackberry-jam.webp "blackberry-jam")

[Certo site](http://certo.co.uk/blackberry-jam/)

Makes **5 jars**

Ingredients

**2 lb (900g) blackberries
3 lb (1.4kg) sugar
½ bottle Certo**

Method

1. Use only fully ripe fruit.
2. Crush thoroughly.
3. Measure sugar and 2 lb. prepared fruit into a large preserving pan and
    mix well.
4. Bring to a full rolling boil and boil over the hottest heat.
5. Stir constantly before and while boiling.
6. Boil hard for 2 minutes.
7. Remove from the heat and stir in the Certo.
8. Skim and stir by turns for just 5 minutes.
9. Cool slightly to prevent fruit from floating.
10. Pot and cover in the usual way.

---

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---

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