I didn't realise it takes a bit of simmering for the flour to thicken it properly. I just kept adding flour until it was nice and thick. Just read I should only of put one table spoon, I just kept sprinkling a bit on top then stirring so not sure how much I put but definitely a lot more than one table spoon. It still tasted nice when hot on the pan but now it's in the fridge with mash on top waiting to go in the oven later.. is it going to taste awful? What happens when you add too much flour?