Pic from PixabayThis seems like a misplaced holiday after all the grilling we just did. But TODAY is National Hamburger Day for some reason.Here are our top 5 favorite toppings, according to a survey of 1,000 Americans . . .#1 – cheese. 79% of Americans like it on their burgers.#2 – lettuce#3 – tomatoes#4 – onions#5 – picklesAnd … our favorite type of cheese to use on burgers is American – then Cheddar – followed Swiss – Pepper Jack – and finally provolone.So …lets fire up the grill again (but we better stop and get another tank of propane).