With Taro it's more of a how long you wait is how much you get, let a taro go for 18 months in a good spot with a mild winter and your going to need a wheel barrel.
If you want a quick harvest like those baby taro you see in the market then you get very little. For instance leaf taro doesn't have it's
roots harvested and is more of a multiple cut food.
It's wet and cold 70% of the year here so i mainly sprout the baby taro's and if we get a perfect summer I get slightly larger baby taro, but my planting locations havn't been the smartest either so usualy i just get leaves.