National Ketchup / Catsup Day and National Gingerbread Day in USA
National Ketchup / Catsup Day and National Gingerbread Day in USA is held on June 5. This event in the first decade of the month June is annual. 
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The American staple was actually inspired by a Chinese condiment. The first recorded recipe for ketchup hails from 544 A.D. China (where the fish-based sauce was referred to by sailors as ke-tchup), which calls for "the intestine, stomach, and bladder of the yellow fish, shark and mullet," and 20 days of incubation under summer sunlight before it’s ready for consumption. The first known written recipe for tomato ketchup came from Philadelphia horticulturist James Mease in 1812. Mease’s recipe included spices, brandy, and, of course, tomatoes, which the scientist referred to as "love apples."
Gingerbread came to the Americas with settlers from Europe.
Similar holidays and events, festivals and interesting facts
National Cheese Day in USA on June 4 (52% of Americans believe cheeses are interchangeable in recipes, and 28% say they switch cheeses because they like to experiment with the flavors different cheeses offer);
National Cheesemakers Day in US on June 4
National Cognac Day in the USA on June 4
National Moonshine Day in USA on June 5
National Donut / Doughnut Day in USA on June 5 (Celebrated on the first Friday of June);
World Donut Day on June 5 (Celebrated on the first Friday of June);
National Sausage Roll Day on June 5
Pineapple Festival in Lampang Province, Thailand on June 6
National Applesauce Cake Day in USA on June 6