Spread a piece of plastic wrap on the counter. Then spoon the remaining paste into the center of the plastic wrap. Now roll one end of the plastic wrap and shape into a cylinder. Roll the plastic ends and tuck under the cylinder. Place tomato paste roll into a ziplock bag and store in the freezer. Next time you need tomato paste, simply cut a round or two for your recipe.
Left over tomato paste can be frozen for up to three months. For most recipes there is no need to thaw out the paste before adding to your recipe.
Of course, with that said I prefer to use the tomato paste in a tube, but on occasion the grocery store is out of stock. What are your favorite food saving tricks?