They are for binding, yes. There are a lot of things you can add or leave with burgers. I just like them better with egg yolk and then the bread crumbs help. You'll need only very little. Two spoons worth or there about. I never measure them.
Just came back from Thai Orchid Villa Kamppi. Damn good Thai food. I usually don't care that much of oriental restaurants here as they tend to do their food in a way it pleases westerners, it's not an actual far East food. But dayum that duck in coconut milk was something spechul. Mm-m.
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