When the elderflower trees blossom during late Spring I always make some cordial orelderflower syrup, which I use for cakes, cocktails and marinades during the Summer. I made these Elderflower waffles using my homemade syrup, so the batter didn’t need added sugar. You can use cordial too, but it’s thinner and less sweet so you’ll need to adjust the milk and sugar content. This a dairy-free and gluten-free version, but you can use normal milk and wheat flour if preferred.