Marinate the red onion

• Put the sliced red onion in a bowl with the water and vinegar.
• Cover with cling film and let marinate in the fridge.

Strain the pickling liquid

• The onion will have released its pink colour and the liquid will have an intense onion flavour.
• Strain the pickling liquid and keep the onions for salads or as a topping.

Prepare the agar mixture

• For the pickling liquid, add the agar agar to a pot and mix well.
• Heat up to 90 °C.

Set the veil

• Pour the liquid into a tray and remove the bubbles with a blow torch.
• Sprinkle the marigold petals on top.
• Cool down in the fridge.

Cut and serve

• Cut the veil with a cutter.
• Enjoy.