When it is cold and the idle is still running a bit higher, the engine will produce enough torque at that engine speed so that you shouldn't have to use the throttle to take off. Just ease the clutch out gently and the rest will happen. Once the clutch is fully engaged, use the throttle and keep the RPMs down until normal operating temperature is reached. This technique allows you to fully engage the clutch sooner with less shudder. The higher the revs, the more shuddering occurs. Works for me, hope it works for you.