Tasty and Great Way to Get Natural Vitamin C
Yes, this is clumpy, it is just the nature of the product.  I ground some clumps up in a coffee grinder and stored the powder in an airtight container. It gradually re-clumped. (It also left a weird film on coffee grinder, so not recommended!)  It dissolves in water easily enough, just takes a little time and a bit of mashing for the larger clumps.
Rating: 4 stars