Is a bit strange that the strength of the yarn changes greatly, as has been described. I used needle size 8, but the yarn is partially so thin that 4 would have been enough - and for the thickest parts would be 10 better. Depending on the pattern you want to crochet / knitting, one must always adapt to it, otherwise the whole thing can be very irregular.
Still, I would buy the yarn again, even in a different color combination.
My package arrived by the way also with tea bags. Yummy! :)