Mix dry spices in mortar or small bowl (note that 2 tbsp Ras el Hanout may be used for sauce spices). Cut meat into 1/2 inch cubes and place into a medium bowl. Massage meat with the spice rub, then cover with plastic wrap and put into the fridge for a couple of hours – ideally overnight. Heat olive oil in medium fry pan and cook meat for 5-10 minutes over medium-high heat until outside is browned. Add liquids, bring to boil, reduce heat and simmer covered for 2 hours, adding additional liquid as needed. Remove lid and continue cooking until liquid becomes sauce, remove from heat and serve over rice or couscous with garnish.