Sandwich XML First Draft

big_mac.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!--
The Big Mac consists of two 1.6 oz (45.4 g) 
100 per cent beef patties, American cheese, 
"special sauce" (a variant of Thousand Island 
dressing), iceberg lettuce, pickles, and 
onions, served in a three-part sesame 
seed bun.
https://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Big_Mac_hamburger.jpg/230px-Big_Mac_hamburger.jpg
-->
<sandwich weight="215g" calories="550kcal">
  <bread type="bun" variation="top">Sesame Seed Bun</bread>
    <filling type="vegetable" slices="3">Pickles</filling>
    <filling type="meat" weight="45.4g">Beef pattie</filling>
    <filling type="vegetable">Iceberg lettuce</filling>
    <filling type="vegetable">Onions</filling>
    <filling type="condiment" proprietary="true">Special sauce</filling>
  <bread type="bun" variation="middle">Sesame seed bun</layer>
    <filling type="dairy" slices="1">American cheese</filling>
    <filling type="meat" weight="45.4g">beef pattie</filling>
    <filling type="vegetable">Iceberg lettuce</filling>
    <filling type="vegetable">Onions</filling>
    <filling type="condiment" proprietary="true">Special sauce</filling>
  <bread type="bun" variation="bottom">Sesame seed bun</layer>
</sandwich>

indentations are not nested and are only aesthetic do describe the breadly encapsulation.