You can absorb around 30% more carotene from cooked carrots than raw.

Studies show that when tomatoes and broccoli are eaten at the same meal their cancer fighting effects are enhanced and greater than if they are eaten separately.

Gram for gram, watercress contains 12 times more vitamin C than lettuce and more iron than spinach.

Peanut butter was first made in 1890 by a doctor in St Louis, USA who started grinding peanuts as a nutritious meat substitute for people who couldn’t chew meat because they had poor teeth.

Although olives are classified as a fruit, you would need to eat around 30 olives for it to count as one portion.

Nutritionally there is no significant difference between black and green olives. The colour of olives is determined by the ripeness of the fruit when it is picked.