Here's the stuff that we know about Swiss Chard...
Also known as just plain chard, swiss chard has large, fleshy but tender deep green leaves and thick, crisp stalks. Although they're unrelated, chard is similar to spinach, but with a stronger, more assertive (some think, bitter) flavour.
Different types of chard have different coloured stalks and ribs - some are white, some are a golden orange and some are red (called ruby or rhubarb chard) - there's even rainbow chard. There's very little difference in taste, but ruby and rhubarb chard can have a slightly stronger flavour.
How do I get Swiss Chard ready to use?
The leaf and the stalks should be cooked separately. Wash, then cut off the stalks from the leaves and leave whole or chop, as required. On some older leaves you may need to cut the ribs out of the leaves, too. Leaves can be left whole, or chopped, as required.
What about keeping Swiss Chard?
In a perforated bag in the fridge, for up to four days.