Query Posts that have Custom Taxonomy

I'm having trouble querying posts that have multiple tags from a custom taxonomy. For example, if I have a post called "Strawberry Splice," it has the Meal Types (custom taxonomy) "Gluten Free" and "Beverages."

When I filter the posts to look for "Gluten Free," "Strawberry Splice" shows up but when I search for "Beverages," there aren't any results. My query is only looking at the first term.

Take a look at http://ift.tt/1AAndHv

This is my partial code to generate the custom taxonomy:

$args = array( 
    'labels' => $labels,
    'public' => true,
    'show_in_nav_menus' => true,
    'show_ui' => true,
    'show_tagcloud' => true,
    'show_admin_column' => false,
    'hierarchical' => false,

    'rewrite' => true,
    'query_var' => true
);

register_taxonomy( 'meal_types', array('recipes'), $args );

This is my code for the query:

$mealtype = $_POST['mealtype'];

$args = array('post_type' => 'recipes', 'meal_types' => $mealtype, 'paged' => $paged);

How do I get it to look at all the terms?