What is "clambakes"

Usage examples of "clambakes".

The beer bottles were twelve-ounce stubbies, the little fat ones you never see anywhere but at clambakes and sandlot ball games.

The rocks were hard, but each of them had experienced clambakes before and would have disdained any more comfortable seat, after all 5 .

All over the island children played Frisbee and baseball, while clambakes steamed under their blankets of seaweed and canvas, and backyard grills sent up clouds of acrid smoke.