When we traveled to Scotland many moons ago, I had a cheese sandwich and it had sweet pickle on it. Turns out the cheese and pickle sandwich is as common as peanut butter and jelly. Today, I made some cheese spread and lacking pimentos and anyone else interested in eating it, I added some sweet pickle relish. It was delicious, not quite Scotland, but close enough.
What's the most unusual thing you've tried while traveling that you recreated when returning home?