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Oven-made autumn raspberry and blackberry jam

Raspberry and Blackberry Jam
Ingredients:

250g/8oz blackberries
250g/8oz autumn raspberries
380g/12oz golden caster sugar, sieved
1 teaspoon lemon juice

Method:

  • Pre-heat the oven to gas mark 6/200˚C/fan180˚C/400˚F. Put the berries into a heatproof dish, do the same with the sugar and place both dishes in the oven for 20-30 mins. The berries should still have shape – check after 20 mins. The fruit and sugar should be very hot.
  • Very carefully combine the hot sugar and hot berries and lemon juice; stir together. The berries will dissolve with the sugar, creating instant jam. Ladle into sterilised jam jars and seal.
  • This will keep in the fridge for a few weeks only.

Cook's tips for making jams, jellies and marmalades:

  • Use dry, unblemished and not overripe fruit. Jam sugar is specified for some recipes – this is sugar with added citric acid and aids the setting of jam when using fruit with little natural setting agent (pectin), such as strawberries.
  • All equipment must be scrupulously clean. First of all your jars and lids must be sterilised. If you have a dishwasher, put them through a high heat cycle (or wash and rinse them well in hot water) then place them on a baking tray and slide into a hot oven (gas mark 3/160˚C/fan 140˚C/325˚F) for 10-15 mins. Keep them warm until you pour in the jam. Always seal jams etc while hot.
  • Use as little water as possible and cover the fruit with a tightly fitting lid.
  • Skim scum frequently while the jam is boiling or add a small knob of butter to disperse it.
If you are interested in gardening or cooking why not check out the residential courses available at the WI's Denman College? Courses run for 2,3 and 4 days and the college is open also to non-members.