Fat Tuesday

Shrove Tuesday (also known as Pancake Tuesday, Pancake Day, Mardi Gras, and Fat Tuesday) is the day preceding Ash Wednesday, the first day of Lent. Shrove Tuesday is observed mainly in English speaking countries, especially Ireland, the United Kingdom, Australia, New Zealand, Canada and the United States but is also observed in the Philippines and Germany. Shrove Tuesday is linked to Easter, so its date changes on an annual basis.

In most traditions the day is known for the eating of pancakes before the start of Lent. Pancakes are eaten as they are made out of the main foods available, sugar, fat, flour and eggs, the consumption of which was traditionally restricted during the ritual fasting associated with Lent.

Wikipedia