The sandwich functional programming image into code

sandwich_fp.js

/**
 * Work in progress.. does not work yet
 */

var recipe = [
    { name: 'bread', slices: 2 },
    { name: 'cucumber', slices: 6 },
    { name: 'paprika', slices: 8 },
    { name: 'tomato', slices: 5 },
    { name: 'salad', slices: 15 },
    { name: 'onion', slices: 20 }
]

var slice = ({ name, slices }) => {
    let i, createdSlices = []
    for (i = 0; i < slices; i++) {
        createdSlices.push(name + ' slice')
    }
    return createdSlices
}

var mix = (finished, slices) => {
    var i, amount = 3
    finishes = finished || {}
    for (i = 0; i < amount; i++) {
        finished['Sandwich ' + amount] = finished['Sandwich ' + amount] || {}
        finished['Sandwich ' + amount][slices[0]] = slices.reduce(s => {
            return s
        })
    }
    return finished
}

recipe.map(slice).reduce(mix)