This mini-mod adds the Yellow Nuka Cola from Fallout Tactics in Fallout 3, with some small extras.

After drinking one, and finding out the truth about it (SPOILER: it's just pee), you can create some yourself if you have some empty bottles with your inventory, and at least one bottlecap.
Select the aid item named [pee in empty Nuka Cola Bottle] to "craft" your own bottle of Yellow Nuka Cola.

WARNING: It gives you +6 Radiation and -1 HP Poisoning for 20 seconds when you drink it. There's no reason to do that. Unless...

Notes
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-After drinking 50 Yellow Nuka Colas, you will get the "Yellow Assimilation" perk, which gives you 15% radiation resistance.
-Try making some Yellow Nuka Cola after drinking Nuka Cola Quantum for a surprise. (Nuka Cola Quantum's "extra" effect lasts for almost a week, 5 in-game days, as per lore)
-Drinking the "surprise" gives you +20 radiation, -2 HP Poisoning for 20 seconds, +20 AP for 4 minutes, and a chance of Nuka Cola Quantum Addiction.
-The "surprise" counts as 5 Yellow Nuka Colas for the amount needed to achieve the Yellow Assimilation perk.
-During or after the Nuka Cola Challenge quest, try giving Sierra Petrovita a bottle of the "surprise" for an extra line of dialogue.

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Only the base game is required for this mod.