Systematic review pectin and post-prandial glucose

3½ lb sugar. NB cherries are low in pectin, so the jam will only give a light set. You may find it helpful to use preserving sugar for this jam. Alternatively you could add redcurrant juice – simmer 1lb redcurrants in ¼pint water. Drain the juice in a jelly bag and add to the cherry jam before adding the sugar. ................
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