An unusual and rare vintage Quaker Oats porridge cooker.
 
The two pans separate and the smaller one has the branding in the enamel. The lid fits either pan.
 
A really lovely thing. I believe how it works is, you would put water to boil in the larger pan and then the oats and milk in the smaller pan. As the boiling water was cooking the porridge it wouldn’t be on direct heat, I assume it would be less likely to stick to the pan or burn
 
. Measurements: large pan widest diameter 23cm small pan 14cm overall height 18cm.