Suka acts as a culinary reset button. The acetic acid in the vinegar breaks down the heavy fats on the tongue. This chemical reaction achieves three things:
If you take nothing else from this article, learn the proper way to diligin (water, drizzle, or dip) a lumpia. There are three schools of thought. diligin ng suka ang uhaw na lumpia
And that’s the point of the joke.
Fried to a golden crisp, the wrapper of a lumpia is porous, dry, and crackling. It is "thirsty" because its deep-fried nature begs for a contrasting element to cut through the oil and richness of its filling. Suka acts as a culinary reset button