Displaying Check Boxes

Hi, This is probably an easy question but I'm trying to send out an e-mail with the data that has been entered using a layout of my choice. I've gotten everything to work except for my check box field. The e-mail only displays the first selection that was checked and not all of them. What code am I missing? Here is my script

"Serve in " + input.Serve_in + ".\n \n" + input.Ingredients + "\n \n This mix includes: " + input.Types_of_Ingredients_in_this_Shot

input.Types_of_Ingredients_in_this_Shot is my checkbox form.

Thanks!
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