It is published in both Welsh and English and features dishes and drinks sourced from across the country, including lamb cawl and faggots.
Eddie Gershon, spokesman for the chain, said it was responding to a desire from customers to support local suppliers and farmers.
“Brexit will have a part in that. We only see positive things coming out of it – and one of those will be to actually ensure that produce from Wales features more heavily in our pubs,” he said.
“Commercially it is very viable for us – we do feel that the value of Welshness is very, very important. We want to do something local and specific to Welsh people and also visitors, so they can have a taste of Wales in our pubs themselves.”