Secret to a really good hamburger is
what you put in the "dough".
In this case it was nut bread from
Also härkäpapu, that
is in english broad bean or
My patties had bread crumbs, härkäpapu
soaked in beef bouillion, leeks, eggs, soy
sauce, ketchup, mustard, beef, pepper and dash of
salt. I cooked them on skillet first then moved them
in the oven untill cooked through.
Meat to breadcrumb, härkäpapu ratio was
almost half, but there was slightly more beef.
Go testing, that's how I cook!