Place all of the ingredients in a small bowl and mix together well. Store at room temperature in a sealed container.
You can also make this starting with whole spices in part or full - just use equal volumes of the ground form, or take a best-guess from whole ingredients. Start by gently toasting most of the spices (cumin, coriander, cloves, allspice, cinnamon stick) in a dry skillet/frying pan to bring out their flavor. Nutmeg can also be freshly grated but does not really need toasted.
Notes
If using the spice blend to season ground meat, you typically use roughly 1tsp per 1lb (450g) of ground meat. Amounts used for other uses can vary.