More vitamin c after cooking?

If cooking affect the concentration of vitamin c in the food what strategies would best preserve the natural vitamin c concentration in cooked foods?

• Answer:

  Minimising contact with water, and cooking for the minimal time. e.g. Steam rather than boil, or eat raw or lightly cooked rather than overcooking. However, if you are eating raw fruit as snacks during the day, you will get vitamin C from that, so this issue is over-emphasized: you need adequate vitamin C in your diet overall, and cooking a few of the veg you eat is fine.