Strawberry jam

New mission - stop wasting stuff!  Trying to use every scrap of fruit and veg in the organic box & some bargain strawberries.  So dinner was cauliflower and macaroni cheese  with added broad beans, runner beans and spinach  with beetroot and tomato salad.  4 jars of strawberry jam (chop and weigh fruit, heat until fruit starts breaking down, stir in about 3/4 of the weight sugar and squeeze in 1 lemon per about 500g fruit - simmer, for about 20 mins - but test after about 15 (the usual, does a skin form on surface when put on cold saucer)  put in sterilised jars.  You could skim the froth off the top - but I didn't.)