What does cum taste like?

Eating meat in general doesn't make sperm taste bad. It's red meats. Chicken and turkey are recommended meats to improve the taste of sperm.

When guys ejaculate, it's basically like 1% actual sperm, and the rest is just a bunch of variations of proteins, sugars, water, cholesterol, vitamins, etc, etc.

So what you said is true, it heavily weighs on what the male diet is like.

If you want to improve the taste, then there's plenty of things you can do to improve it, not only for that, but your overall health as well.

1. Drink lots of water.
2. Cut out junk food - as it has a bunch of preservatives and chemicals that pollute your body.
3. Eat more fruit - fruit like pineapples and mango's are good choices as they're higher in natural sugar count.
4. Eat more vegetables, but avoid veggies from the cabbage family and asparagus.

Two others I looked up were

5. Parsley, wheatgrass, and celery are particularly recommended for sweeter semen taste, because of their high chlorophyll content.

6. Cinnamon, cardamom, peppermint and lemon are particularly recommended for making semen taste sweeter.

Other then that ;| Don't cut out meat. Your body needs the protein, just cut out red meats.