Product review for Giant Red Hamburger Onion Overall Rating: Write an online review and share your thoughts with other customers Sort Reviews: Newest | Oldest | Highest Rating | Lowest Rating   :: Viewing page 1 of 1  -  Tuesday, August 04, 2009 Giant Red Hamburger Onion Reviewed By: Sharon Ondrejka (Cincinnati, Ohio) I planted the Giant Red Hamburger Onion bulbs this spring and by the middle of July, I was 2" to 4" onions. These are the BEST tasting onions I have ever eaten, either cooked or raw.