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Sour cream for cream should be of high quality, thick, 25-30% fat content. If the sour cream is liquid, as well as to obtain a thick consistency, the sour cream can be pre-weighed (hung in a cloth bag) to excess glass liquid. Alternatively, you can use a thickener from a bag (read the instructions for it). In a bowl, combine the sour cream, sugar and vanilla sugar and whisk with a mixer until fluffy.