Trouble Displaying a Parent Category

I have quite a few categories on my site, so they’re structured using sub categories. Here’s an example of how my site works…
Food – Dinner – Drinks – Iced Tea (“Iced Tea” would be a post)

I’d like to only show Dinner & Drinks and not “Food”. I’ve tried using a couple of other pieces of code, but no luck. The below code is what’s been the best so far. Any help would be greatly appreciated.

<?php
        $breadcrumbs = explode('|',get_category_parents($cat,true,'|'));
        array_pop($breadcrumbs);
        array_pop($breadcrumbs);
        if ($breadcrumbs) foreach ($breadcrumbs as $crumb) echo ' / '.$crumb;
?>