What the liquor was I do not know, but it was not so strong but that I could swallow it in great gulps and found it less burning than my burning throat.

Indeed, the envisioned future should produce a bit of "the gulp factor" […], there should be an almost audible "gulp".

Little Stanislovas was also trembling, and all but too frightened to speak. "They — they sent me to tell you — " he said, with a gulp.

He does not swallow, but he gulps it down.