Barley was used to make porridge and flour for bread. Olives provided olive oil for cooking and lamps. Grapes were made into wine by mixing one part wine with two parts water or drying into raisins. Blacksmiths used bronze and later iron to make tools like swords, plows and axes. Woodworkers crafted beds, plows and door frames. Fishermen sold their daily catches at the agora, with poor Greeks eating small fish and wealthy Greeks preferring tuna, sea bass and red mullet. Eel was a delicacy. Marble quarrying involved drilling holes, inserting wooden wedges, soaking the wood to make it expand and break the rock along a straight line.