Here's why:
* Redundancy: "Delicious" already implies a high degree of tastiness. Adding "very" can sound redundant and slightly awkward.
* Better alternatives: There are many more descriptive and evocative ways to express deliciousness:
* Extremely tasty
* Absolutely delectable
* Incredibly flavorful
* Truly mouthwatering
* Wonderfully satisfying
Consider using a more specific adjective to describe the flavor or texture:
* "The cake was incredibly moist and delicious."
* "The curry was spicy and very delicious."
Ultimately, the best way to express deliciousness depends on the context and your desired level of formality.