Every year I decide to try to grow at least one new vegetable, and I have to say I've been disappointed with my recent efforts:
Celtuce - bitter green leaves with no point or interest to them.
Asparagus peas - didn't thrive, stayed tiny and produced only a few, tough little pods.
Chicory - mine turned messy and slimy, and tasted horrible
Petit Posy, a sort of sprout-kale cross that turned out to have the worst features of both.
Scorzonera - long rope-like tubers that were almost impossible to dig out of the ground and tasted of nothing when cooked.
Now you'll be thinking it's just me, but I grow lovely carrots, tomatoes, courgettes, chillis, peas, beans, parsnips, potatoes and salads. I just can't seem to be successful with anything more unusual (unless you count the chilllis, or land cress). Perhaps they are unusual for a reason ...
Anyway, I am undaunted and this year I'm trying cavalo nero (black kale).
How about you?