On to the juicy parts:

The menu is generated by assembling 9 random strings to form a sentence (menu item), it starts with a noun, such as Casserole, or Cream, etc, followed by a cook method, a trendy element, serving method, a preposition, an upsale value, a preparation method, a side dish/element, and finally an outrageous item price.

There are many values for each of the 9 elements above, and we just randomly pick one of each, the source code in JavaScript (ES6+) is here: /static/js/fancy-menu.js

Notes:

The code is implemented as an IIFE so you may place it anywhere in your HTML code.

jQuery: Though removing the jQuery dependency is trivial, I've decided to keep it for simplicity purposes, therefore this script requires jQuery to operate correctly.

Usage:

1. Add a <div id="fancy-menu"></div> in the markup.
2. From a button, link, etc, add an event that calls this menu, e.g. <a href="javascript:void(0)" title="Generate Menu" onclick="return FancyMenu.show();">Generate Menu</a>
3. To clear/repopulate, call the FancyMenu.clear() function.

let FancyMenu = (() => {
    let _generate = {},
        show,
        clear,
        getPriceInt,
        chooseOneOf,
        nouns = [
            'Infusion', 'Suggestion', 'Memory', 'Whisper', 'Cloud',
            'Distillation', 'Essence', 'Deconstruction', 'Cream',
            'Suppression', 'Ragu', 'Purée', 'Foam', 'Blade',
            'Carpaccio', 'Dumpling', 'Velouté', 'Raviolli',
            'Compote', 'Emulsion',
            'Palette', 'Curd', 'Bricolage', 'Casserole'],
        cook_method = [
            'Water-Bathed', 'Broiled', 'Flame-Roasted',
            'Blackened', 'Braised', 'fondant', 'Liquidised',
            'Nitro-Poached', 'Jellied', 'Hand-Carved',
            'Shaved', 'Josper-Baked', 'Kiln-Smoked', 'Hashed',
            'Salt-Crusted', 'Macerated', 'Flattened', 'Bain-marie',
            'Ionized', 'Pickled', 'Maple-Cured'],
        trendy = [
            'Woodcock', 'Sea Scallops', 'Calf\'s Liver',
            'John Dory', 'Sweetbread', 'Langoustines',
            'Black Pudding', 'Squab Pigeon', 'Monkfish',
            'Aĩoli Hancock', 'Black Bream', 'Chorizo', 'Quail',
            'Barramundi', 'Octopus', 'Bone Marrow', 'Duck Breast',
            'Pig\'s Trotter', 'Sea Bass', 'Serrano Ham'],
        serve_method = [
            'floated', 'draped', 'bubbled',
            'reasting', 'heaped', 'layered',
            'combined ', 'served', 'entwined',
            'on a bed', 'spliced', 'tossed',
            'plated with', 'enrobed by', 'accompanied',
            'injected', 'presented', 'laced',
            'arranged', 'nested', 'Chiffonade'],
        prepositions = ['on', 'over', 'with', 'in', 'by', 'through', 'within'],
        upsale = [
            'unique', 'hand', 'locally-sourced', 'perennial',
            'chef\'s choice', 'decomposed', '', 'triple-basted',
            'seasonal', 'arabesque', 'spanish', 'mediterranean',
            'locally-inspired', 'hollistically assembled',
            'a dash of', 'slow roasted'],
        prep_method = [
            'Mashed', 'Diced', 'Sliced', 'Cubed', 'Pan-Fried',
            'Crushed', 'Provenčal', 'Wafered', 'Sauteed',
            'Artisan', 'Slop-Poached', 'Responsibly Sourced',
            'Griddled', 'Marinated', 'Boiled', 'Aromatic',
            'Buttered', 'Two-Way', 'Herbed', 'Heritage'],
        side = [
            'Baby Turnips', 'Cabbage', 'Potato', 'Tomato Bed', 'Chervil',
            'Aubergine', 'Courgette', 'Beetroot', 'Spring Onion',
            'Radishes', 'Asparragus', 'Black Olives', 'Celeriac',
            'Herbs de Provence',
            'Purple Sprouting Broccoli', 'Chard', 'Chicory',
            'Semphire', 'Mung Beans', 'Fennel', 'Watercress'];

    chooseOneOf = (arrSize) => {
        return Math.floor(Math.random() * arrSize);
    };

    _generate = (numItems) => {
        numItems = typeof (numItems) === 'number' ? numItems : 5;
        let items = [];
        for (var i = 0; i < numItems; i++) {
            items.push(
                nouns[chooseOneOf(nouns.length)] +
                ' of ' +
                cook_method[chooseOneOf(cook_method.length)] + ' ' +
                trendy[chooseOneOf(trendy.length)] + ' ' +
                serve_method[chooseOneOf(serve_method.length)] + ' ' +
                prepositions[chooseOneOf(prepositions.length)] + ' ' +
                upsale[chooseOneOf(upsale.length)] + ' ' +
                prep_method[chooseOneOf(prep_method.length)] + ' ' +
                side[chooseOneOf(side.length)] + ', $' +
                getPriceInt().toString() + '.95');
        }
        return items;
    };

    show = (menuItems) => {
        clear();
        var items = _generate(typeof menuItems === 'number' ? menuItems : 10);
        items.forEach(function (item) {
            $('#fancy-menu').append('<li>' + item + '</li>');
        });
        return false;
    };

    clear = () => {
        $('#fancy-menu').empty();
        return false;
    };

    getPriceInt = () => {
        /* Returns a value for a fancy menu item */
        let min = Math.ceil(17),
            max = Math.floor(26);
        return Math.floor(Math.random() * (max - min) + min);
    }

    return {
        show: show,
        clear: clear
    };
})();