Mixing is a critical step in batter preparation since overmixing causes the gluten to develop excessively and create a batter with too high of a viscosity that is difficult to pour and does not expand easily. A thick batter that is difficult spreading in the baking iron has an increased water activity of around 0.85. The increased viscosity made it harder for water to evaporate from the waffle causing an increase in water activity. The control waffles with a softer texture had a water activity of 0.74 after cooking. The Aw is less because the softer texture allows the water to evaporate. With an increased storage time, waffle physical and textural properties changes regardless of the batter viscosity. Aged waffles shrink because air bubbles leak out and the structure starts to condense. Hardness and viscosity also increases as time goes by. Aged waffle samples displayed a starch retrogradation peak that increased with storage time due to the fact that more crystalline structures were present. Starch retrogradation is mentioned previously in this paper. The enthalpy value for melting of starch crystals increased with storage time as well.
Earliest of the 16th century waffle recipes, Om ghode waffellen te backen – from the Dutch KANTL 15 manuscript (ca. 1500–1560) – is only the second known waffle recipe after the four variants described in Le Ménagier de Paris. For the first time, partial measurements were given, sugar was used, and spices were added directly to the batter: Take grated white bread. Take with that the yolk of an egg and a spoonful of pot sugar or powdered sugar. Take with that half water and half wine, and ginger and cinnamon.
With all three batters, as well as our bonus rounds of stuffing and grilled cheese, there was a clear difference in the quality of results between higher-end, more expensive models and lower-end, budget models. The high-end models heated up significantly faster and hotter, and had a much shorter recovery time between waffles. They all have heavier plates than the lower-end models, resulting in even heat and consistent browning. The waffles made in our more expensive models all became deeply browned in under four minutes, while the less expensive models took anywhere from eight to 15 minutes. This resulted in huge variations in the density of the inside and the texture of the exterior of the waffles.
A company that offers a generous warranty is a company that believes in their product — and also believes that they won’t have to replace many waffle irons under said program. A warranty also gives you peace of mind, since you know that you’re guaranteed a functioning appliance for at least as long as the warranty is good for (and hopefully much longer).
That said, quite a few users say that this waffle maker isn't as sturdily built as previous versions of the same model, and that if you don't get the top heating plate aligned just right, it can fall off -- an injury hazard if the plate is hot. The top of the G48TD also gets very hot. Some use pliers to bend the metal clips that hold the heating plates in place, which helps them line up better -- or you can just use an oven mitt to protect your hands.