I’ve been buying many quarts of blueberries at the Farmer’s Market. Half gets eaten and half gets frozen. I rinse them (they’re organic), dry them, then spread them on a cookie sheet and freeze them through. Then I pick ’em up with a metal spatula and drop them in a freezer bag. Then I suck out what air I can with a straw and quickly seal it. Like so:
My question to you is: how can I make these freezer bags more airtight? I find that after some days when I check them, air has sneaked back in. Should I tape them, or glue them somehow? Any ideas?