broken auto

HTML

<input type="text" id="food">

JavaScript

var source= ["Arborio Rice","Basmati Rice","Bay Leaf","Bean Sprouts","Beef Stock Cube","Black Pepper","Butter","Carrot","Carrots","Caster Sugar","Castor Sugar","Celery","Chicken","Chicken Stock","Chilli Powder","Chocloate","Chocolate","Cocoa Powder","Coriander","Coriander Powder","Cumin Seeds","Demerara Sugar","Digestive Biscuits","Drinking Chocolate","Egg","Eggs","Garam Masala","Garlic","Golden Syrup","Ground Black Pepper","Ground Pepper","Ham","Hard Margarine","Honey","Lasagne","Leek","Milk","Minced Beef","Nutmeg","Oil","Olive Oil","Onion","Oregano","Parmesan Cheese","Pasta","Pepper","Plain Flour","Pork","Porridge Oats","Potatoes","Raisins","Raspberries","Rice","Salt","Sausages","Seasoned Pepper","Self Raising Flour","Sherry","Smoked Haddock","Soft Margarine","Soy Sauce","Sugar","Swede","Tin of Baked Beans","Tin of Tomatoes","Tomato Puree","Vinegar","Whipping Cream"];

    $(function() {
    $("#food").autocomplete({
        source: source,
        minLength: 2,
        select: function(event, ui) {
            log(ui.item ? "Selected: " + ui.item.value + " aka " + ui.item.id : "Nothing selected, input was " + this.value);
        }
    });
});