Parboil the green peas.

Melt butter in a pot, and sauté thinly sliced onion and green peas.

Add 150g water and boil until onion and green peas are very tender. Add a little more water, if necessary.

Add a stock cube to the pot, and after it dissolves, purée the soup in a blender.

Return the soup to the pot, add milk, and stir consistently to keep the soup from burning. Add salt and pepper to taste.

Put ingredients for the spider web pattern into a sturdy plastic bag (such as a zip-lock bag), and heat in microwave for 10 seconds.

Mix together the ingredients from outside the bag, and adjust the amount of milk depending on the softness, then reheat in the microwave. It should reach the firmness of 80% stiff whipped cream. Be careful not to burn yourself!

Once the cream is smooth enough and there are no more lumps, cut a very small hole in the corner of the bag, and, as if using a decorating bag, pipe a spider web pattern on top of the soup in serving bowls.

To make the spider web pattern: starting in the center, create a spiral moving outward, then, using a toothpick, draw about 6-8 radiating lines. Children will love helping with this step.