awful- adjective or adverb?

Hello!
In the sentence: ‘This soup tastes awful.’ ‘awful’ is adjective or adverb?
It seems to me that ‘awful’ is adjective (awful soup), what do you think?
Thank you for your time!

Since ‘taste’ fall into the list of the so-called sense verbs (feel, sound, look, taste, appear, seem) which are followed by adjectives, you need ‘awful’ there.
"Sense verbs convey personal opinions, thoughts, and perceptions in an inherently subjective manner – that is, they describe someone’s personal experience. The sentence “The strawberry shortcake tastes delicious” has essentially the same meaning as “The strawberry shortcake tastes delicious to me” or “I think the strawberry shortcake tastes delicious.” 800score.com/guidec4view1V2c.html