A 30-million dollar (20-million EUR) brand would normally be nothing to write home about for the executives of Frito-Lay, the world's biggest manufacturer of salty snacks with annual sales of 10 billion dollar (7 billion EUR) and more than fifteen 100-million dollar brands in its portfolio. But when that brand is Flat Earth - an innovative range of fruit and vegetable chips launched in February last year - it's cause for cheering at the PepsiCo unit.
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