Final answer:
The signature beers offered at Twin Peaks are Twin Peaks Lager, Knotty Brunette, and Dirty Blonde.
Step-by-step explanation:
The signature beers offered at Twin Peaks are Twin Peaks Lager, Knotty Brunette, and Dirty Blonde. These beers are part of Twin Peaks' own brewery and are exclusive to their restaurants. Each beer has its own unique flavor profile and characteristics.