La San Marco

LA SAN MARCO HAS BEEN PRODUCING QUALITY ITALIAN MADE ESPRESSO MACHINERY SINCE 1920.

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Why 53mm baskets?

Really interesting article in the 3rd edition of the La San Marco Coffee Break on the advantages of a 53mm group head over 58mm. It’s all to do with the well known “Darcys Law” which is to do with liquids passing through porous compounds . Basically better to go deep and narrow, than wide and shallow.

Having a deeper path for the brew water to move through, extracts a better quality espresso , than a shallower path. Particularly when the pre-infusion is applied, the ‘puck” and provides a more resistant channel, and further improving extraction.