Thickening Yoghurt

I made a breakfast the other day with a yoghurt base and a crispy salmon filet on top but the yoghurt was almost a liquid texture. I can obviously go an buy a thicker yoghurt like labneh but I was curious if there is a way of turning my thinner yoghurt into something with peaks and troughs (mostly for presentation) I tried adding cornstarch but it didn't have the effect I was after. submitted by /u/Powerful-Cake-1236