The cherry-flavored cola made its debut at Morrison's Old Corner Drugstore.

Dr. Pepper is the correct answer.

Dr. Pepper is a popular carbonated soft drink that was invented by Charles Alderton in 1885 in Waco, Texas. It is known for its unique blend of 23 flavors, which gives it a distinct taste.

Here is a detailed explanation of the answer:

1. Invention by Charles Alderton:
- Dr. Pepper was invented by a pharmacist named Charles Alderton.
- Alderton worked at Morrison's Old Corner Drug Store in Waco, Texas, where he came up with the recipe for the beverage.
- He experimented with various combinations of flavors until he created a unique blend that became the basis for Dr. Pepper.

2. Creation of the Recipe:
- The exact recipe of Dr. Pepper remains a closely guarded secret.
- It is believed to be a combination of various fruits, spices, and other flavors.
- The distinctive taste of Dr. Pepper has made it a beloved beverage for over a century.

3. Introduction to the Public:
- Once Alderton had perfected the recipe, he started serving the drink at the soda fountain in Morrison's Old Corner Drug Store.
- Customers loved the new beverage and it became a popular choice among the locals.
- The popularity of Dr. Pepper quickly spread beyond Waco and it gained a loyal following.

4. Branding and Expansion:
- In 1904, the trademark for Dr. Pepper was registered by Wade Morrison, the owner of the drug store where Alderton worked.
- The drink was initially marketed as a brain tonic and energizing drink.
- As its popularity grew, Dr. Pepper became available in bottles and was distributed to other parts of Texas and eventually to other states.

5. Continued Success:
- Dr. Pepper has remained a popular beverage throughout its history.
- Today, it is one of the most recognized soft drink brands in the world.
- It is known for its catchy advertising campaigns and its slogan "What's the Worst That Could Happen?"
- Dr. Pepper is now produced and distributed by the Dr Pepper Snapple Group, which is a subsidiary of Keurig Dr Pepper.

In conclusion, Dr. Pepper was invented by Charles Alderton in 1885 in Waco, Texas. It has since become a beloved soft drink known for its unique blend of flavors.