CONCENTRATE
Kellogg’s Concentrate proves that even the healthier, less flashy cereals of days gone by have their fans, too — it’s in the top 10 of Mr. Breakfast’s All-Time Greatest Cereals. Introduced in 1959, it was on store shelves into the ’70s and aimed to provide a ton of vitamins and nutrients in every bite. The tiny flakes expanded so much in milk that a serving amounted to only a couple of tablespoons.