The invention relates to a method for obtaining a soy and algae-based liquid food product and the liquid food product obtained by preparing a mixture with the following ingredients whole deshelled soy, water, and dry marine alga as a stabilizer, grinding the dry marine alga and the soy together while preparing the mixture, with a controlled heat supply for their activation, so that said mixture produces a fluid paste from which, by centrifugation, a liquid part providing said food product is separated. The dry marine alga is obtained from a whole red alga selected from the group comprising at least one of the following algae genera: Chondrus, Gigartina, Eucheuma.
