You need to raise the glass to see the light or the light of the sun and look for the depth of the normal color and intensity of the color and then swing for 2 - 3 around to see the viscosity or to the flow by the view from the wine called the tear or leg, if the wine flow to the bottom is very slow mean that the wine have a lot of body but if the wine flow to the bottom very speed means that the wine is the amount of water