Why You Might Want To Blend The Meat Sauce For Your Next Lasagna - Tasting Table
Briefly

Blending your ragu regularizes the texture of your meat sauce so you can disperse it more evenly when assembling your layers of bechamel, noodles, and cheese.
This means every strata has a uniform consistency and flavor, making each comforting bite as yummy as the last with the perfect ratio of meat sauce to pasta.
Blending your meat sauce makes the consistency of the ground beef more palatable to youngsters who may have an aversion to chunkier textures.
Using a stick blender right in the ragu pan transforms any uneven, chunky nuggets into a slightly finer grind that's easier to distribute.
Read at Tasting Table
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