1. hang the curd in a kitchen towel over a baking dish in the cellar or refrigerator and drain for one night.
2. fillet the grapefruit. To do this, cut a cap small from the top and bottom of the fruit at the beginning, put grapefruit on the plate and separate the remaining peel from the pulp. The fruit should be peeled so thick that the white skin is completely removed and the flesh is exposed.
Then use a sharp kitchen knife to cut out the individual fillets between the partitions. Place the fillets in a gratin dish or possibly a baking dish and squeeze the remaining juice out of the fruit.
Cut the stem end of the lemongrass into small pieces and peel and cut the individual leaves into strips. In the middle there is a thin stem end, which is great for skewering the grapefruit. (Always alternate pink and yellow). If you want to save yourself the trouble, you can place the fruit fillets on the plate just like a sun and simply cut the lemongrass into rings.
4. Melt 5 tablespoons of sugar in a saucepan and extinguish with the grapefruit juice. Once the sugar has dissolved, add the lemongrass and the pulp of a vanilla pod, bring to the boil briefly, remove from the heat and infuse for 15 minutes. Then strain the grapefruit sauce through a sieve, lightly thicken with a little cake glaze powder and pour over the fruit fillets.
Leave to infuse in the refrigerator for one night.