Table 1.

Experimental groups for Fig. 1, Fig. 2 and Fig. 3. During the initial 24-h access or brief 8-h alcohol access sessions and subsequent LDA sessions, mice drank under two-bottle choice access: one bottle had 15% alcohol (with or without quinine) in water, while the other had water only. See Methods section for further details.

Experimental group	n for Fig. 1, Fig. 2 and Fig. 3	Column color in Fig. 1, Fig. 2 and Fig. 3	Substance consumed in the protracted initial session	Substance consumed in LDA sessions
Alc-only	40	Blue	24-h alcohol-only	Alcohol-only
Alc-then-AlcQ	29	Red	24-h alcohol-only	Alcohol + quinine
AlcBrief-then-AlcQ	15	Purple	8-h alcohol-only	Alcohol + quinine
AlcQ-only	12	Red-brown (with white hatching)	24-h alcohol + quinine	Alcohol + quinine
H2O-then-AlcQ	12	Green	24-h water-only	Alcohol + quinine