In ancient times the Greeks cooked flat cakes, called obelios, between hot metal plates. As they were spread throughout medieval Europe, the cake mix, a mixture of flour, water or milk, and often eggs, became known as wafers and were also cooked over an open fire between iron plates with long handles.
Round metal plate decorated with raised pattern of flowers, vines, and leaves Detail of a Belgian moule à oublie Waffles are preceded, in the early Middle Ages, around the period of the 9th–10th centuries, with the simultaneous emergence of fer à hosties / hostieijzers (communion wafer irons) and moule à oublies (wafer irons). While the communion wafer irons typically depicted imagery of Jesus and his crucifixion, the moule à oublies featured more trivial Biblical scenes or simple, emblematic designs. The format of the iron itself was almost always round and considerably larger than those used for communion.
The oublie was, in its basic form, composed only of grain flour and water – just as was the communion wafer. It took until the 11th century, as a product of The Crusades bringing new culinary ingredients to Western Europe, for flavorings such as orange blossom water to be added to the oublies; however, locally sourced honey and other flavorings may have already been in use before that time.
Oublies, not formally named as such until c. 1200, spread throughout northwestern continental Europe, eventually leading to the formation of the oublieurs guild in 1270. These oublieurs/obloyers were responsible for not only producing the oublies but also for a number of other contemporaneous and subsequent pâtisseries légères (light pastries), including the waffles that were soon to arise.