Originally Posted by FlowerBlossom
Density and volume people !!! The volume of 1 oz of milk is much lower than 1 oz of watercress. 300g of watercress is a LOT of watercress. And, it's out of season.
Assuming watercress doesn't have gas bubbles in it, the density should be very close to that of water (probably off by only a few per cent). Same thing with milk...
In fact, most things we eat should end up fairly close to the density of water, as long as it's not hard candy, protein powder or fat chocolate.