Question: > 
> Placed in front of you with a feast meat for a king,  
> 
> Offered by the clown that comes with a new, neat thing.
> 
> 
> Tastes from the sea when the red girl comes this way,  
> 
> Always good with whatever John catches that day.
> 
> 
> To tempt you with what the cows try to murder,  
> 
> Or at the place where you won't wait further.
> 
> 
> 

What am I?

Answer: 
Based on Francesco Roggia's observation that

> 
> the initial letters spell **potato**,
> 
> 
> 

you are

> 
> **french fries**.
> 
> 
> 

Placed in front of you with a feast meat for a king,

> 
> Burger King
> 
> 
> 

Offered by the clown that comes with a new, neat thing.

> 
> McDonald's
> 
> 
> 

Tastes from the sea when the red girl comes this way,

> 
> Wendy's
> 
> 
> 

Always good with whatever John catches that day.

> 
> Long John Silver's
> 
> 
> 

To tempt you with what the cows try to murder,

> 
> Chick-fil-A
> 
> 
> 

Or at the place where you won't wait further.

> 
> In-N-Out Burger [last clue added with hint from author]
> 
> 
>
I'm just guessing here:

> 
>  Is it something about a Potato? Just because of the first letter of the rhyme maybe that's a hint to the right answer. I don't really know what is a potato about with each line of the riddle, i let anyone else guess it 
> 
> 
>