Girardin follows the traditional [[Brewing Lambic|lambic brewing]] processes, with the following notable facts:
* Two [[koelschip|coolships ]] are used, one under the tiled roof and another in the brewing hall. The temperatures in these two locations are different and depending on the weather, the temperature can be varied to optimize inoculation by wild yeasts.<ref name=GeuzeKriek />
* Girardin has two brewing systems. The old system includes a cast iron kettle and the new system is copper.<ref name=GeuzeKriek />