Grilled Tilapia with Peach Guacamole

 I like a to have a 

photo to go with a food post.

I have made this dish twice and although it

tastes great, it has a bit of a problem.

The guacamole turns brown VERY quickly.

I grill the tilapia outside

and then make up a very basic

guacamole with the addition

of a fresh peach.

I put the tilapia on a bed of quinoa

and then top with the guac.

It's delicious.

The problem is, no amount of lime

juice keeps the concoction  

from turning brown.

Fast.

I suspect it's the fault of the peach.

But I'd like confirmation.

Mark?

Basic Guacamole:

one mashed avocado

a few slices of jalapeno, diced small

small amount of red onion, finely diced

salt

lime juice

one peach, chopped

Mexicanish Quinoa:

cooked quinoa

corn

black beans

jalapeno

olive oil drizzle on top