You take bacon and diced it up then heat it until melted. Pour it in a container and let it cool. the more fat the bacon has, the better the smalec.
Szmalec is a type of Polish lard created from rendered pork fat. Homemade szmalec is typically imbued with pork cracklings, chopped and fried onion, marjoram, salt, pepper, and other seasonings. It is a classic peasant dish typically used as a substitute for the ‘rich man’s butter’ and is spread on bread. Approx. equal to one month’s supply of cholesterol on a single slice of bread. My pastor notes that szmalec and bread were the daily ration for seminarians in Poland during the dark days of communist oppression.