citric acid. how much is too much?

[robgreen]

So i've bought a pack of youngs citric acid. Label says 1 flat teaspoon is equivalent to juice of 1 lemon. Making 10 litres of ginger beer, how much citric acid should I use, what stage in the process should I use it.

All the best brewdogs

Rob

 

[iceo]

i use 1 teaspoon(kids meds spoon) per gallon at the start of brewing but thats me.

im sure someone will be along to say if thats wrong or right

 

[robgreen]

So thatd be the equivalent of the juice of just 2 lemons for 2 gallons of beer?