(Adj): Pertaining to the heart, stimulating or invigorating the heart (food and drink); heartfelt, warm, sincere.(Noun): Tnic, usually a liqueur, originally thought to stimulate the heart.
The noun derived from this word is cordiality "(human) warmth, friendliness" and the adverb is "cordially."

"The true test of cordiality is whether you can be cordial with someone you dislike."
"Nothing makes you more cordial than a good cordial after dinner."
Source: Your Dictionary