👉 Rennins are a type of protein found in various foods such as chicken, fish, eggs, and milk. They are also known as "sodium salts" because they contain sodium, which is essential for maintaining fluid balance and regulating blood pressure. However, it's important to note that not all rennin-containing foods have the same levels of sodium content, so it's recommended to check the nutritional information on the packaging or look for reputable sources like the USDA National Nutrient Database (https://