To say that investors have a big appetite for Cava Group's (NYSE: CAVA) stock would be an understatement. As of July 19, shares are up more than 100% compared to their opening price on the first day of trading on June 15. 

For investors in this restaurant stock, the hope is that its fast growth can continue for years to come. Given enough time, shareholders would love it if Cava could become the next Chipotle Mexican Grill, the popular Tex-Mex chain that has been thriving for several years now, and still has tremendous growth potential. 

But I think it's important not to forget that this is still a restaurant business. And this presents a key risk that's strikingly obvious. Here's what investors should know.

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Source Fool.com