National Cheese Souffle Day and I love Reese’s Day in USA
National Cheese Souffle Day and I love Reese’s Day in USA is held on May 18. This event in the second decade of the month May is annual. 
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The word soufflé first appeared in English in Louis Ude's The French Cook, 1813, and by 1845 was so commonly accepted that in Eliza Acton's Modern Cookery a recipe for soufflé was included as just another recipe.
I Love Reese’s Day was born (2016). A couple of years ago “nearly 40,000 fans” joined an online campaign on Reese’s Facebook page to say they loved Reese’s Peanut Butter cups and wanted America’s best-known cup of peanut butter and chocolate to have its own day.
Similar holidays and events, festivals and interesting facts
National Cherry Cobbler Day in USA on May 17
National Pinot Grigio Day in USA on May 17 (You must be 21 or older to host this event);
Walnut Day on May 17
National Marshmallow Day in Melbourne, Australia on May 18
National Devil’s Food Cake Day in USA on May 19
National Quiche Lorraine Day and National Pick Strawberries Day in USA on May 20
National Strawberries and Cream Day in USA on May 21
International Chardonnay Day on May 21 (Celebrated on the Thursday before U.S. Memorial Day each year thanks to the creator Rick Bakas)