Plant fresh noodles in a deep pot filled with enriched soil, ensuring they are fully covered. Water thoroughly and place in a sunny spot, allowing them to absorb nutrients.

Meanwhile, prepare the magic growth elixir by combining hoisin sauce, soy sauce, rice vinegar, sesame oil, minced garlic, grated ginger, and optional red pepper flakes in a bowl.

Once the noodles have "grown" (representing cooking), drain them well and transfer them back to the pot or a large bowl. Pour the prepared elixir over the noodles, tossing gently to ensure even coating.

Garnish with freshly "harvested" sliced green onions and a sprinkle of sesame seeds. Serve immediately and enjoy your magically grown Hoisin Garlic Noodles.