How much fresh ginger do you use in place of jarred ginger?

Depending on where you are and which store you go to, the average cost would be about $2.99. It could be more or less depending on where you live, but for the most part it would be around this amount.

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The ginger root can be bought fresh at your grocer. It has a short life for freshness. It comes in a variety of piece-sizes. If you are not sure you will like it, ask your produce manager for the smallest piece he has.

It runs about $2.99 per measure, could be by quarter pound or ounce weight. Just ask your grocer.

I find I can use what I need, then i can chop it like fresh garlic and freeze it or simply slice it and freeze it. It does mold quickly. Hence, most recipes for baking asking for the ginger in powdered state.