when we have this we just chop it and lightly blanch it then chuck it in tupperware (varying sizes depending on how much you use at a single time ITMS...for example, i use DDs old EMB Avent containers LOL!) and then freeze. to defrost i either do a quick defrost in the microwave (be sure not to overheat!) or, just pop the container in some hot water (just enough to dislodge it) and i throw it in whatever i am cooking even when still quite frozen as it cooks so fast....

HTH!

and yummo! love home-grown spinach!