Hi Balan,
thanks for your question and I hope we haven’t confused many people out there with the different forms of lime! We’ll soon have a pdf ready with our best current mix.
In the meantime: we don’t actually add the builders lime to the coffee. When we add straw (not strictly required but great enhancement) we soak the straw overnight in a lime bath and then leave it to drain for a while. The lime needed for the lime bath pasteurisation is Hydrated Lime – which is sometimes also called Builders Lime. It usually has less than 10% magnesium content (which is good), but worth checking this with the supplier if possible.
I trust that helps but if any questions please do let me know.
Best wishes,
Eric
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