Feeding my Starter

Toast

Hello, 

I was given some starter from a local bakery. The instructions for feeding state to “pour all but a tablespoon of starter out and either make a second starter, bake or give to a friend, etc- anyway- it states “in your starter jar, mix the remaining tablespoon of starter with equal parts water and flour until you get the consistency of brownie batter. 

Am I understanding this right? I’m assuming it means as equal amount as starter so I’m adding a tablespoon of flour and a tablespoon of water. 

it doesn’t seem like enough to me? Totally new to this 

First a equal amount in weight not in volume. 
So say take 10 gram of starter and at anything between 20 to 50 gram of water and flour. 

If you can get a scale, I’d say you should since sourdough baking is pretty reliant on accurate measurements. Still, volume measurements can work so long as you know the weight of each ingredient.

1 tbsp of sourdough starter weighs around 14-15 grams. 1 tbsp of water weighs around 15 grams. 1 tbsp of flour weighs around 8 grams. So if you wanted to the feed the starter a ratio of 1:1:1 (starter, water, flour), then you’d mix in 1 tbsp of starter, 1 tbsp of water, and 1 tbsp + 1 scant tbsp of flour. Alternatively, you could always increase the amount of flour and water you add so long as you keep the ratio between the two the same; for instance, you could feed 1:4:4 by mixing in 1 tbsp of starter, 4 tbsp of water, and 7.5 tbsp of flour.