Roasted Grape Preserve

Directions

1. 1
   you will need a roasting tin large enough to hold the grapes comfortably in a single layer. preheat the oven to a one hundred and seventy celsius. place the tablespoon of oil in the roasting tin and let it warm in the oven while you wash and halve the grapes.
2. 2
   once the oil is warm place the grapes in the pan and shake it gently. do make sure that the grapes are fully coated with the olive oil otherwise their sugary juices will burn in the oven. return to the oven and let them roast for half an hour to forty minutes, stirring them half way through.
3. 3
   i like to retain some of the juices as they give the bread in a tartine a bit of moisture. if you prefer less juice then roast for a little longer making sure to check on them frequently so that the sugars do not burn.