Plant protein and whey are broad categories. Compare the actual protein amount, ingredients and serving you will use. A larger scoop or a more expensive tub does not automatically give you a better protein option.

Studies of particular plant blends have found similar responses to whey under their tested conditions. That is useful evidence, but it does not mean every plant powder and every serving size have been shown to be equivalent.

Put both products on the same basis: protein in your intended serving and the cost of that serving. Include allergens and dietary requirements. Taste and texture also matter when the powder is supposed to solve an everyday problem.

Whey comes from milk. Lactose intolerance and milk allergy require different decisions; low lactose does not mean free of milk protein. Plant powders can have allergens or troublesome ingredients too, so read the whole label carefully.

When testing a powder, avoid changing the milk, fruit, sweetener and serving size at the same time. Start with a simple familiar recipe. A small package can tell you more about comfort than another marketing comparison.

Protein powder is a convenience, not a requirement. First identify a meal or travel situation where food is difficult to organise. Choose a product that fills that gap comfortably, or use ordinary foods when they already work.