What has been translated as red pottage is in Hebrew two times the word "red" then you see that the same word "âdôm" used in 2 Kings 3:22 is translated: as red as blood.
2 Kings 3:22
And they rose up early in the morning, and the sun shone upon the water, and the Moabites saw the water on the other side as red as blood:
So I am wondering if this red pottage was not in fact made out of kidney beans because all around the Americas as well as the Carribeans red beans and rice are still used in our food. It is a very common thing.
Lentils, the orange kind is mainly used in India.
I believe that not only the landscape and nature will lead us to our ancestors but also food described in Our Records like corn that they have changed in new translated version of our writings.