Beer lovers should make a pilgrimage to Ingolstadt: Here is where the famous German Reinheitsgebot originates. The law about the purity of beer states that no other ingredients may be used in the production but hop, barley, and water. This law was first published in 1516 in Ingolstadt for the Duchy of Bavaria. It spread out and was adopted all over the country.
EU regulations forced Germany to abide this law in 1988 and allow foreign beers on the market that contain other ingredients, for example preservatives. However, in Germany the rule is still valid. Most German breweries (except those that produce for export) stick with the Reinheitsgebot for quality and marketing reasons, and advertise loudly that they do. The average German beer consumer is conscious about quality and does not want those crappy 'artificial' beers with ingredients that just don't belong into a beer.
There are beers which are made not from barley but from other types of grain, like wheat (Weizen, Weißbier) and, rarely, rye. These must be classified as such on the label. To these, however, the same rules apply concerning the other two only ingredients, water and hop.
Fondest memory: Ingolstadt has four large breweries and a number of microbrewery-pubs in the old town. I did not stay long enough to try them all. Herrnbräu is quite good - cannot tell how it compares to the others.
The biggest company in Ingolstadt is AUDI and there are plenty of supplying companies in and around Ingolstadt. In December 2000 Audi opened its new AUDI Forum and a car museum. Beside of visiting the Forum it is possible to attend a guided tour through the plant.
Fondest memory: For more info look on the web page http://www.audi.de
Favorite thing: This is what they call the central section, or "downtown", of Ingolstadt... It's only one long street full of big stores, some restaurants, travel agencies and other businesses... but it's very nice to stroll along the street and look at the typical buildings, as well as eat a little snack or do some shopping! I personally found wonderful stores and nice deals -- my favorite store in Germany was a boutique called "ORSAY"... great prices and nice clothing!