Thing is, we wouldn't even need a tax to do that; we'd simply need to cut the exorbitant subsidies that go to meat and dairy production, and put them into foods

Thing is, we wouldn't even need a tax to do that; we'd simply need to cut the exorbitant subsidies that go to meat and dairy production, and put them into foods with a better nutritional value/carbon impact ratio. A litre of dairy milk should simply never be as cheap as a litre of soy milk. The market value does not represent the "true" price to the consumer because of heavy government intervention. The figure in this study sums it up pretty well, discussing what percentage of money and how much goes into each agricultural sector: https://www.oxfordmartin.ox.ac.uk/blog/meat-and-dairy-gobble-up-farming-subsidies/ https://www.oxfordmartin.ox.ac.uk/blog/meat-and-dairy-gobble... To be frank, every country's subsidy ratio should look like India's in my eyes.