This cake is for a 21st birthday. I am making it similar to this cake: http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1006663
except with a margarita theme, instead of a martini.
My question is: how can I make the margarita glass look like it's full... do I fill it with something, and what would that be?
For the salt, I plan on using those sprinkles, I think they're called cake sparkles or something.
And for the lime, maybe a fondant lime?

But my biggest question is how do I make the margarita glass look realistic without, obviously, having a real margarita in it?

TIA!!

So I really don't know what I'm doing and I have to make this cake on friday.

How about filling it with green jello? Just make it right in the glass. Be sure to support it under with some dowls/straws and a board!
Good luck!
Tracy

If you are going to make it like he martini cake why don't you use a margarita glass and fill it will crumpled light green and white tissue paper.
I would rim the glass with real sugar and a real slice of lime or one of those candy gummy limes. Also I made margarita cookies and marbled white fondant with lime green and used these to cover the margarita glass cookie and then I rimmed the top of the cookie with sugar sprinkles. I then tied a small green ribbon around the stem of the cookie. Just throwing out some ideas, hope it helps. [/img]

Or green piping gel? It would be easier than making up the jello, anyway. I'm not positive what one looks like EXACTLY since I've never had one, but hey, piping gel tinted green is clear and looks like liquid!

Piping gel is kind of clear too. I'd be worried about it not setting up (unless you plan on filling the glass on site, then it's not really an issue).
You could add a little milk to jello to get it to look cloudy.

I used jello that i beat with a blender after it set up for this cake. They make Margarita flavored jello this time of year!

http://www.cakecentral.com/cake-photo_830673.html