Step 1 You can buy blood orange sorbet but making it is super easy. Just combine 400g of freshly squeezed blood orange juice with 150g of agave syrup and pop in the freezer. Pull out every hour and whisk to get a great texture. Step 2 To assemble the cocktail, make sure your Cremant is as cold as possible and your Stinky Fish Challenge is in the freezer. Add your ingredients to a blender for 15 seconds and pour into a frozen glass. Garnish with fennel fronds and a slice of blood orange.