Cut kernels from corn cobs and transfer to a large saucepan, along with any corn liquid that can be scraped from the cobs.

Add 1/2 cup water (it should be about half the depth of the kernels), and bring to a boil over high heat. Reduce heat to medium, cover, and cook and steam for 7 minutes.

Transfer corn to a food processor and pulse/process until it looks like cooked corn meal. Return to the pan and cook over low heat, stirring very often, until desired thickness, about 10-15 minutes.

Stir in salt, pepper, and butter. Adjust seasoning to taste.