This grower is sure of this plant identification.
Piper Betel aka Paan leaf which is a popular plant in Asia where the locals chew it with Areca nut. I have made cuttings from this 3 yr old plant successfully, it is indoor grown not for growing outdoors as intolerant to cold. This plant is approx 18in tall, very easy to maintain has vining habit. Compost is normal free draining does not like being waterlogged. Light conditions near a window but not near draughts. This variety is known as Bangla Paan as it is originally from Bangladesh.
Pepper, Betel pepper, Pan
Piper betle (Pepper). A tall climber from India and the Malay peninsula. Leaves are heart-shaped enclosing a nut. The floral spikes are 15cm and become red as fruit develop.
The species are frost tender and will need a warm climate with moist, humus-rich soil. They will grow in sun or shade.
Chewed as a stimulant and for its medicinal properties in Asia.