To add to John and Will's suggestions I looked at your website and I think the "Menu Update" template could also work well for this purpose. There is space for your logo at the top, and the full width block under that could be used to add an eye-catching image of some of the popcorn like on your main page. The background pattern could be matched to your brand color, with a few customization options on the pattern. Alternatively, you could sub out the pattern for a solid color. I'm guessing you'll want to remove the fork and spoon divider since that is more restaurant-y.
I find that sometimes the names of the templates can feel distracting for people that have specific content in mind, such as an introductory email. Some people get inspiration from the more complete designs of "Menu Update" or the "Image Focus Newsletter" John suggested, and for others it's easier to start with one of the less designed ones like "Blank Template" that Will suggested that you can really mold into your own vision (even though they look a little bland at first glance). Let us know how we can help if these are still a little off from what you had in mind.
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