I was in Dingle, Ireland. We were walking around, enjoying the town, and popped into a pub I didn't catch the name of. Their menu looked good, so we decided to get some food. I ordered the tuna melt, and it was the best damned tuna melt I have ever had. The fish tasted great, and there was very little dressing. The red Cheddar was perfectly melted, and the rye bread was toasted, but light.
This was almost 18 years ago, and I still think about that sandwich.