The great big thread of sunchoke info - growing, storing, eating/recipes, science facts

I read somewhere that digging sunchokes just as they are preparing to sprout - so, February in my climate & hemisphere - means the storage inulin is starting to be converted back to more readily available carbohydrates for the plant.

Has anyone got a source where this has been tested by measuring the insulin content through the winter & spring of sunchoke storage tubers?