The best replacement for egg yolks is egg whites.

The best alternatives to egg yolks are rated as following:
★★★★★  egg whites
★★★  whole eggs
★★★  whites
★  yokes
  double down
  whole egg

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Speaking about egg yolks, one probably shouldn't forget about whole eggs.

Other search terms related to egg yolks and their ratings are:
★★★★★ whole eggs
You have in mind a companion for egg yolks and it is not yet here? Propose!



Google Trends

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egg yolks
egg whites
whole eggs