There are numerous web sites that claim to offer connection to VC and angels. However, the vast majority of the VC/angels will tell you that a "personal" introduction is by far the best way to approach them.
Here is a place to start.
How much capital are you seeking?
As you know, restaurants are viewed as "risky" although I can`t say they are more risky than some of the tech stuff I`ve seen in the past!
Most people (VC firms, professional angels and private investors) invest in what they know and/or what they feel passionate about.