Add all of the ingredients to a medium bowl, and mix to incorporate. If using sugar, mix until fully dissolved.
Taste the mixture and add sugar and vanilla to taste. At this point, add any powdered or liquid flavourings as desired.
Add to ice cream machine and run for 15 minutes
Add solid flavourings like nuts, chocolate chips, or fruit pieces
Run the ice cream machine for another 5-10 minutes
Transfer to a freezer safe container
Notes
Taste the batter after mixing the ingredients. Aim for more intense flavours than desired since the flavours will mellow out when the ice cream cools
For solid flavourings, chop the pieces to about the size of a chocolate chip before adding them to the ice cream mixture
The ice cream is done when it resembles the consistency of soft serve. For a firmer texture, freeze for a few hours.