Place egg whites, and cream of tartar into TM bowl and beat 6 min/50°C/Butterfly/speed 3/MC off. Set whites aside in large bowl. Remove Butterfly.
Place sugar and tonka bean into clean dry TM bowl and mill 4 sec/speed 10. Add cream and vanilla to TM bowl. Whip 15-40 sec/Butterfly/speed 4 until stiffened. Add egg yolks and whip 3 sec/speed 3.
Add mixture to beaten whites.
Add milk to the whole mixture and fold everything together until you have an even but light consistency. Garnish with cinnamon, freshly grated nutmeg and add alcohol as desired.