Brit Care Cat Paste Anti Hairball with taurine

Not being an expert in malt paste myself, I can't say if they all taste the same. This is the first one I've bought. My cat wouldn't touch it for anything in the world, it's just not to his taste. Now I've got a 100g tube and no idea what to do with it. I try putting it on top of his wet food in the evenings, but it’s no use—every night I find a bit of food covered in malt left behind. Typical cat!