In many places I have lived there have been lilac bushes. I have to admit that at no time did the the thought, “Can you eat the lilac flowers?” come into my head.
Then, one day, at a lovely dinner at Smyth and The Loyalist in Chicago, part of our menu had lilacs. They tasted great.
Their menu changes a lot and is super creative so you may not get lilacs if you visit, but you are sure to come away with a dining experience to remember.