<?php

$tea_content = array(
    array(
        'type' => 'select',
        'title' => 'Prove it: what do they mean by "Bapouet"?',
        'id' => 'my_select_field_id',
        'default' => 'unicorn-toy',
        'description' => "Don't cheat: the movie is NOT the solution :)",
        'options' => array(
            'toy' => 'A simple toy',
            'milk' => 'Just milk',
            'unicorn-toy' => 'A unicorn toy... Very stupid :p',
            'tails' => 'A red fox with a tiny cute fire tail with his blue faster hedgedog friend',
        ),
    ),
);
1232

Retrieve data

Using the _get_option('my_select_field_id') method, you'll get (with a json_encode() display):

"unicorn-toy"