Anything but what is already in the soda.
The vanilla might slightly affect the taste, but the baking soda and salt will affect the outcome of the cookies.
no
Some variables are if it is new or old, hot or cold, diet or normal
If u have ice it will melt. you better use this answer
The difference between the taste of can soda and bottle soda is in my opinion a can soda has less aside then a bottle soda. In a can soda you taste more aside then in a bottle of soda. A bottle of soda only taste good at when you begin to drink it and if you leave it for an hour later the taste goes away and the soda taste sweet. In a can soda you could leave it in a fridge for an hour and when you finish drinking it taste the same.
There are two major factors that affect the quality of fountain soda. First, the quality of the water mixed with CO2 will alter the taste. Second, the percentage mix of syrup to water/CO2 will affect the flavor. The mix varies in each geographical region.
Because lemon has alot of acid in it, you will taste the lemon flavor. Just like a soda, when you take your first sip, you can taste the strongness in it. The soda can be weak or strong.
Well soda has a sweet taste because of its sugar and sweetning. When you drink soda you might taste the soda as a sparkling feel on your taste buds.
a variable is when you find out what can affect something. for example; what variables affect the taste of a soft drink? -too much water -little ice -too warm etc.
There is a taste difference between caffeine and no-caffeine versions of the same soda.
No
Some variables are if it is new or old, hot or cold, diet or normal