"SS" donates super speed foods - not super free. Superspeed foods are those that are reputed for one reason ro another (mainly low calorific values but filling) to help with the weight loss. Healthy Extras can be S/SS (Scan bran for instance).
SuperFree foods are foods that appear on the free foods list of both original and green days. Peas, sweetcorn, parsnips, potatoes, rice, pasta, etc. do not appear on the free foods lists for Original days and therefore are not superfree. (though some of them can be had as healthy extras on original days).
Free/SuperFree and Speed/Superspeed foods probably need to be better distinguished in the books - maybe with new acronyms or something?
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