I was at my local Asian grocer the other day and they had two types of tamarind pods, both of which came in boxes. One was labeled "sweet" tamarind and the other was labeled "sour" tamarind. There was no other info on the box (except the nutritional information, which was the same for both) and the ladies that run the store couldn't tell me anything. The tamarind pods themselves looked basically the same, from what I could see - one might have been a little smaller than the other, but it could have just been that one box had smaller pods on top. Has anyone encountered this, and if so, can you comment on the difference in flavor? I was looking for tamarind as a tangy component, of course, and I didn't want to buy the "sweet" kind if they were truly sweet, nor the "sour" kind if they were just sour. Thanks!