Ben & Jerry's evolved into what it is doing and is trying to transition its supply chain, but this is essentially retrofitting. In the social enterprise movement, we see companies whose essence, the products they make, the reason they exist from day one, is because these people see something out in the world that they cannot accept.

So much business is based on the belief that we should do whatever we can within legal limits to make as much money as we can. Ben & Jerry's was based on values, and we try to operate a business that not just sells ice cream but partners with all our stakeholders - whether that's suppliers or customers - to bring about a more sustainable world.

Ben & Jerry's is an indulgent dessert that should be eaten in moderation. You should not be replacing more than one meal a day with ice cream. We do not consider a pint or a tub of ice cream to be a single serving.

Businesses typically look at issues like price, quality, time of delivery. They don't often think about social and environmental impact because they're focused on their financial bottom line.

I like that Ben & Jerry's is willing to speak out about social and political issues that aren't always safe - but are the right thing to do.

It's pretty rare to have CEOs or high level executives at big companies who are social activists. They tend not to be drawn to those areas of life.

Ice cream is the perfect buffer, because you can do things in a somewhat lighthearted way. Plus, people have an emotional response to ice cream; it's more than just food. So I think when you combine caring, and eating wonderful food, it's a very powerful combination.