There are many ways to make papier mâché bowls - this is one of my ways - made with watercolour paper, gesso or chalk paint - then gilded and painted and polished.
brush + blender
Repeat by adding more layers of glue and paper and allow to dry. How many layers you add really depends on the size of the balloon you're working on. The bigger the balloon and therefore the bowl - the more layers. I add about 4-5 layers when using this method. The pulp adds most of the strength to the bowl when dry but you need a strong enough layered base to support the pulp.
Torn watercolour paper - small pieces to put in a blender to make the papier mâché pulp.
Add warm water to help soften the paper and then whizz it all up until there are no lumps and sieve it, gently pressing out about 80% of the water. I try to avoid squeezing as this tends to make lumps.
and water, is made in a double boiler as it's a gentle process, stirring constantly to a creamy consistency. Do not allow to boil. Gesso can be reconstituted by reheating in the double boiler. More water may be added.
and it will be fine. If you are using acrylic gesso there will be no little anomalies. I rather like the serendipity of anomalies as they usually lead to new discoveries. Repeat the process, adding gold leaf.