What is the origin of the idiom "have a finger in the pie" and when to use it?

The idiom "have a finger in the pie" is believed to have originated from medieval England, where "pie" referred to a meat pie. In those times, people often shared communal pies at social gatherings. The person who hosted or organized the event would typically have the responsibility of cutting and serving the pie. Those who wanted to exert influence or control over the situation might insert their finger into the pie to claim a portion or make their presence known. Figuratively, the expression is used to refer to someone who has an involvement or stake in a particular matter, often with a sense of participation or having a share in something, but it may not necessarily carry a connotation of meddling or influence.

What is the origin of the idiom "have a finger in every pie" and when to use it?

The idiom "have a finger in every pie" likely derives from the idea of having one's fingers in multiple pies, indicating a propensity to be engaged in numerous activities and endeavors. This expression is used to emphasize an individual's desire to be part of and knowledgeable about various situations, whether out of curiosity, helpfulness, or a desire to be informed.