The brand, known primarily for its organic chocolate, is widening its ice cream range with three flavours - chocolate orange, chocolate mint and vanilla caramel nut - as well as a stick format consisting of chocolate ice cream coated in dark organic chocolate. It is also making its existing praline and dark toffee variants available in 100ml tubs costing £1.25.
The products will be available from early-May, with the ice cream in 500ml tubs at £3.79 and the 100ml stick priced £1.49.
Packaging will promote the products' organic credentials, emphasising that all its dairy content is sourced from British farmers. The products will also carry lines such as 'We whip less air into our ice cream'.
Green & Black's has just embarked on a fresh burst of brand advertising through Fallon, but is not planning any ads specifically for ice cream.
To support the launches, Green &Black's is sponsoring the 2003 English Heritage Music on a Summer Evening series of concerts, where samples will be freely available.
It has also partnered with the National Trust, inviting kids to trial Green & Black's easter eggs over Easter weekend at more than 100 National Trust properties.
The UK's premium ice cream category grew 10%, notching up retail sales of £165m, in the 12 months to January 5, according to Taylor Nelson Sofres.
Wall's made £39m, mainly through its Carte D'Or premium brand, followed by Haagen-Dazs with £22m and Ben & Jerry's on £15.2m. Green & Black's has just 1.65% of the market. The brand, which launched in 1991, entered the ice cream market four years ago.