Which brand spent four years developing the pyramid tea bag design introduced around 1996 or 1997?
Answer
Brooke Bond (a Unilever brand associated with PG Tips)
The development of the pyramid tea bag was a significant investment by Brooke Bond, which is identified as a Unilever brand associated with PG Tips. This intensive development process spanned approximately four years before the novel three-dimensional sachet was introduced to the market near the timeframe of 1996 or 1997. This introduction immediately positioned the design as a technological step forward, designed to extract superior flavor compared to existing formats. This corporate development effort was central to the subsequent commercial rivalry concerning tea bag innovation.

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