Horse radish is a condiment, not sure of fat content or type, check.
And use accordingly.
Alfalfa Sprouts should be a favorable carb, and it would take a huge amount to equal 1 block, so feel free to use liberally. (we use various sprouts with salads)
Looling up . . . . .
It takes 16 cups! to equal 1 block of net carbs and 1 block of fat.
Since there is more Protein than Carbs and Fiber,
Some Protein is probably available; however, I'd consider it negligible!
1 TBL of (Plain, prepared) Horseradish:
F = 0 Blocks
C = .2 Blocks
P = 0 Blocks