Best ways to find local customers?

I started a coffee roastery out of sheer love for coffee. I'm not a business person. I'm a systems admin/engineer, so I naturally tend to be introverted. I'm not opposed to talking to people and I love customer interaction, but I'm having trouble thinking of where to get started finding the right customers for coffee subscriptions. Do those of you who are successful just bite the bullet and look foolish when interacting with strangers, then occasionally land someone who is interested?