Wash the apple, carrot, and beetroot thoroughly and peel the beetroot.
Grate the carrot and beetroot, then use a clean cloth to squeeze out some juice by hand. Save the juice for other recipes if desired.
Let the grated carrot and beetroot dry in a clean, dust-free area for 2 days or use a food dehydrator.
Slice the apple thinly and dry it alongside the carrot and beetroot.
Lightly roast the dried carrot, beetroot, and apple slices in a pan until crisp. Set aside to cool.
Dry roast the almonds and pistachios in a pan until aromatic and crisp, adding the cardamom pods during the last minute of roasting.
Grind the roasted carrot, beetroot, and apple into a fine powder using a mixer.
Separately grind the roasted nuts and cardamom into a fine powder.
Mix the powdered nuts with the carrot-beetroot-apple powder.
Sift the mixture to get a smooth, uniform powder.
Transfer the final powder to an airtight container and store it in a cool, dry place.
Mix two tablespoons of AB Malt powder with hot milk and natural sweeteners like jaggery or palm sugar, stir well, and serve warm.