Place orange zest and sugar into Thermomix bowl and mill 5 sec/speed 9.
Add a dash of the orange juice and cook 6 min/Varoma/speed 1.
Add rhubarb, strawberries, remaining orange juice, cinnamon and vanilla and cook 13 min/100°C/speed 2.
Blend 1 min/speed 8-9.
Cool slightly before serving with a scoop of gelato and a little cracked black pepper over the gelato.
Add a dash of Crème de Fraise or other fruit liqueur of choice.