so, last night i attempted to make my own yoghurt...I did the following:
heated 1.16 litres of whole milk until just before it bubbles at the sides.
Let it cool to blood temp.
added two tablespoons probiotic greek style yoghurt.
left in porch til sun went in, then put on cabinet above radiator all night (although radiator went off at about 9)
this moring it is much thicker, and smells like yoghurt, but is the consistency of snot
why? what did i do wrong? please help, i can't bring myself to eat it!