Tomatoes - vegetable or fruit????

Day 23

Okay, so I hit quite a revelation when talking to Jane....is a tomato a vegetable or a fruit.....I say vegetable....she says fruit!!  I tried googling it, but there is so much controversy that I thought I should throw the question back to Chen and Patrick.....SO.....in terms of PCP diet.....what is it???  I'm popping these cherry tomatoes in whenever I can to add grams.....just need to make sure I'm dong it in the right place!