What did I do wrong??? Garlic Pesto?

[Veggiesauraus]

I followed the recipe on homepage for wild garlic leaf pesto (yes definitely wild garlic) but it tastes really bitter? I did put flowers and their stalks in too! Was this my mistake???

[Gem]

Def only use the leaves and then get the earliest ones you can as the bigger they get the more bitter they are. I have not made pesto out of wild garlic but use it in cooking/salads and have found this to be the case.

Gem