How To Wash Swiss Chard Before Freezing It
Here's a common method for cleaning leafy greens like Swiss chard using a gentle, yet effective water and vinegar solution.
Separate the Swiss chard leaves.
Fill a big bowl with water and add 2 tablespoons of vinegar.
Put the Swiss chard in the bowl. Let it soak for 30 minutes.
Remove the Swiss chard from the bowl and put it into the colander/strainer. Rinse it under cold running water.
Place the Swiss chard on a towel and pat it dry with another cloth.
Trim off the ends of the Swiss chard stems (about 1/4 inch or 1cm—see image below.)
Cut away the rest of the stem from each Swiss chard leaf (see image below.)