Taste Identification

Taste Identification is not a part of the class skill set.
This skill is used to identify poison and traps in items.
Your main class skill won’t decrease if you train Remove trap.

Skill efficiency

Mostly the skill is used to check chests for traps. When a trap is installed on a chest, a character may die immediately when getting into it. So, the skill is essential for some chests you are unsure about.
Besides, with this skill, you can make sure that your food isn’t poisoned.

Ways of leveling your skill

Check treasure chests or food for poison or traps.

Here is a detailed video of how the skill is used: