To create the rose geranium syrup, place the ingredients in a vacuum bag and vacuum seal, and steep until needed.
Peel and finely dice the onions. Gently cook out in the oil with the garlic until soft but not coloured. Add the vegetable stock to the pot and bring up to a simmer. Add the beans and cook until just tender. Blend in a Thermomix jug until smooth. Stir in the rose geranium sy