> I love kale. Here in Hollan,d it is typically used for only one recipe:
> stamppot boerenkool. Cut up kale is cooked until done (20-40 minutes). I
> need about 20 mins for the froznen stuff, fresh takes longer. Then it is
> added to mashed potatoes. It's served with (smoked) sausage and gravy and
> fried bits of bacon. Some people likd to have gherkins or piccalilly on
> the side, or mustard. SOmetimes I ad freid onions to the mash. My mother
> also added cooked barley to it (good for texture).
>
> So I'd say, give it another try cooking it longer.
>
> Jeffrey Steingarten says it takes about 8-10 tries before a new, "strange"
> food tastes good, the tries being in smalllish quantities. So maybe you
> could give another 9 tries 
>
PS I tied jarred kale once. Never again, it was horrible.