I grow a lot of green beans and don't blanche. Wash, drain on a cloth, chop and weigh into roughly 250g portion polybag, freeze. Very young beans are left whole. They go into boiling water to cook and I can taste no difference to fresh. I do generally get through them all within 12 months ready for the next crop.
I am growing pea beans for the first time this year. Has anyone tried these?