Pop all the dry ingredients into a glass bowl, and mix them well. Pour in the 1/2 cup of vinegar, and mix it together with a spoon. The vinegar will cause a some fizzing, but not very much. The mixture will start clumping together. If it’s a bit dry and unable to combine it all and evenly, add some more vinegar in small stages until it all comes together.
Firmly press the mixture, in equal parts, into a mould. A silicone mould would work well, but we made use of the ice-trays we had. We made 40 large tablets with this recipe.
Now comes the hard part! Put your trays/moulds in a sunny spot inside and leave them for a minimum 48 hours to ensure they’re completely dry! If you try to pop them out any sooner, they tend to crumble and not hold their shape. After they’ve dried, pop them out of the trays and store them in an airtight container or jar.
USING YOUR TABLETS:
Use one tablet per load in your dishwasher. If your load is packed with extra grease and grime, add another half tablet or 3-4 drops of dishwashing liquid to your machine.