Big Bertha is a type of sweet pepper known for its large size and mild, sweet flavor. It's a popular choice for stuffing, salads, and grilling due to its impressive size and thick walls. The peppers typically start green and mature to a shiny red. 
Big Bertha peppers are one of the largest elongated bell pepper varieties, reaching 7-8 inches in length. They have a thick-walled, glossy, and firm texture.