combiner.js

let data = [
  {
    label: 'Food',
    value: 1,
  },
  {
    label: 'Hors D\'Ouvers',
    value: 2,
  },
  {
    label: 'Meal',
    value: 3,
  },
];

function combiner (options) {
  let columnIndex = 0;
  let items = [];

  while (columnIndex < options.length) {
    let itemA = options[columnIndex];
    let rowIndex = 0;

    items.push({
      label: itemA.label,
      value: [itemA.value],
    });

    while (rowIndex < options.length) {
      let itemB = options[rowIndex];
      let isContained = items.some(({ value }) => {
        return value.includes(itemA.value) && value.includes(itemB.value);
      });

      if (!isContained && itemA.value !== itemB.value) {
        items.push({
          label: `${itemA.label} & ${itemB.label}`,
          value: [ itemA.value, itemB.value ],
        });
      }

      rowIndex += 1;
    }

    columnIndex += 1;
  }

  return items;
}

console.log(combiner(data).map(item => {
  item.value = item.value.join(',');
  return item;
}));

// => [ { label: 'Food', value: '1' },
//      { label: 'Food & Hors D\'Ouvers', value: '1,2' },
//      { label: 'Food & Meal', value: '1,3' },
//      { label: 'Hors D\'Ouvers', value: '2' },
//      { label: 'Hors D\'Ouvers & Meal', value: '2,3' },
//      { label: 'Meal', value: '3' } ]