Britannia 50-50 biscuits offer a combination of sweet and sour taste. These square shaped biscuits with tiny little holes in them are a complete time pass. They have been since very long and taste quite similar to Parles Krackjack.
Now-a-days, there arent really many advertisements of these biscuits, but earlier when it was launched, they broadcasted one of the funniest ads on TV. The biscuits are crunchy and have a great shelf life. Even if you keep them open in the air, they dont really attract moisture quickly, unlike other biscuits.
50-50 has a very buttery kid of taste. Its creamy and crunchy. I enjoy them with my evening tea or coffee. The packaging is funky too, in a green and silver packet. The price is nearly the same as most of the others.