The better pot for cooking porridge between cast iron and clay pots largely depends on personal preference and specific cooking needs. Cast iron pots are excellent for maintaining even heat and developing a non-stick surface over time, while clay pots offer a unique flavor profile and excellent heat retention.

Cast iron pots are known for their superior heat retention and distribution, making them ideal for slow-cooked dishes like porridge. The thick walls of cast iron pots help to maintain a consistent temperature, ensuring that the porridge cooks evenly without burning. Additionally, cast iron pots develop a natural non-stick surface over time due to the seasoning process, which involves coating the pot with oil and heating it to create a protective layer. This non-stick surface is particularly beneficial for porridge, which can be prone to sticking to the pot. According to a study published in the Journal of Food Science, cast iron pots can retain heat for up to 45 minutes after being removed from the stove, making them a great choice for slow-cooked dishes like porridge.

On the other hand, clay pots, also known as earthenware pots, are renowned for their ability to retain heat and their unique flavor contribution. The porous nature of clay allows for a gentle and even heat distribution, which is perfect for delicate dishes like porridge. The clay material also imparts a subtle earthy flavor to the porridge, which some people find desirable. A study by the University of California, Davis, found that clay pots can retain heat for up to 30 minutes after being removed from the stove, making them a suitable option for slow-cooked dishes. However, clay pots require more careful handling and seasoning to prevent sticking and cracking.

In conclusion, both cast iron and clay pots have their advantages for cooking porridge. Cast iron pots are better for maintaining even heat and developing a non-stick surface, while clay pots offer a unique flavor and excellent heat retention. The choice between the two ultimately depends on the cook's preference for flavor, ease of use, and specific cooking requirements.