agar

This substance is defined by its ability to solidify liquids into a stable, semi-rigid gel. In scientific settings, it is the gold standard for microbiology because most bacteria cannot digest it, allowing them to grow on the surface without the medium being consumed.

In culinary contexts, it provides a firmer, more heat-resistant structure than animal-based gelatin. It is frequently used in Asian desserts to create jellies that remain solid at room temperature, offering a clean, neutral taste that does not interfere with other flavors.