Preliminarily, different percentages (5–40%, wt/wt) of oat flakes flour (OFF) were mixed with tap water, homogenized and assessed based on sensory perception to get a yogurt-like texture. Amount of OFF lower than 20% (wt/wt) gave a too liquid matrix, allowing the fast separation of the solid particles to the bottom. Percentages higher than 30% (wt/wt) gave matrixes similar to semisolid dough. The percentage of 25% (wt/wt) was the optimum and it was used for further experiments.