Place one slice of Gouda cheese on top of ham and mustard.
Take a knife and spread a coat of mayo on top of cheese.
Now, start at the top (the longest part) of the ham, and roll, roll, roll- like a cinnamon roll until you reach the end.
If you pack these tightly into one of those ziplock containers, the roll should keep its shape with no problem.
You can always place a tooth pick in it to hold it's shape if you are going to put it on a platter.
For best results and flavor, I recommend that you refrigerate in the coldest part of the fridge for at least 30 minutes before serving to hold the shape and to add more refreshment when eating on a hot summer day.
Perfect for a beach picnic.
Just place the rolls into one of those ziplock disposable containers, and pack into your cooler.