Homemade Sweet Potato Fries. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Airtight freezer container or plastic freezer bag. Jan 24, 2013 - Blanching and freezing potatoes for French fries is a simple process. LIVESTRONG is a registered trademark of the LIVESTRONG Foundation. This demo clearly shows me, "I have not heard of blanching before. Homemade fries are worth the extra effort. Last Updated: December 30, 2020 This image may not be used by other entities without the express written consent of wikiHow, Inc.