Top five most wasted foods (and ways to save them from the bin) #1 Bread. Over 240 million slices of bread are chucked away every year. ... #2 Milk. Around 5.9 million glasses of milk are poured down the sink every year, but it's so easy to use it up. ... #3 Potatoes. We discard 5.8 million potatoes each year. ... #4 Cheese. ... #5 Apples.