In 1.0 and later, it's largely through doubling upgrades.
The base rate is 0.5 CpS, or 0.8 after you buy Forwards from grandma.
This increases by 0.02 for each grandma after buying One mind, an additional 0.02 for each grandma after buying Communal brainsweep, and 0.05 for each portal after buying Elder Pact.
The rest of the grandma upgrades make grandmas 2^18 = 262,144 times as efficient.
- Six upgrades that double the rate are unlocked after having hired specific numbers of grandmas: 1, 5, 10, 50, 100, and 200.
- The nine grandma costumes are unlocked for having at least 15 of each building (Farm through Prism). These are also doubling upgrades.
- Buying seven grandma costumes unlocks Bingo center (quadruple); waiting after that unlocks Ritual rolling pins (double).
- During Christmas, the "festive hat" upgrade chain will eventually unlock Naughty list (double).
Once you enter the Grandmapocalypse by buying One mind, part of the grandmas' production actually becomes quadratic (O(n^2)) because the base rate for each grandma includes something multiplied by the number of grandmas, and that in turn is multiplied by the number of grandmas. With more than 40 grandmas, the majority of your production is from quadratic effects.
As with every other source of cookie production, this is multiplied by your cookie production multiplier (mostly flavored cookies and heavenly chips), egg multiplier (Easter-related), covenant multiplier (95% if in effect), frenzy multiplier (usually 100%, occasionally 700%, 50%, or 66600%), and wrinkler multiplier (100% to 600%).
Sources: "Grandma", "Upgrade", and "CpS" pages on Cookie Clicker Wiki
You need to have Cookie Clicker as your active tab to let Raptr track your gametime and the browser doesn't need to have focus. If you're browsing with multiple tabs, everytime you switch out from Cookie Clicker, Raptr will notify you something like 'Cookie Clicker - 9 seconds played'.
This behavior has been tested with Chrome and Firefox. With Explorer I'm under the impression that gametime isn't tracked at all.
Best Answer
The answer to your question
The base amount of milk is 0%. The current formula for calculating milk is
milk = achievements / 25. That means that for every achievement, you get 4% milk.Are you sure 58 is the number shown in the stats page? I currently have 40 achievements, giving me 160% milk (as expected).I have just discovered that not all achievements count. The August 27th update states:
If you hover over one of these achievements, it'll say [Shadow] in the tooltip. An example of this is:
This means that even though it's displayed in the stats page, it doesn't actually count when calculating milk %. Thus, even though I have 42 achievements, since one of them is a [Shadow] achievement, the game calculates my milk as 41 / 25 = 164%.
More milk facts!
The text next to milk is just flavour text. When milk is less than 100%, it's simply plain milk. When it's at least 100% but less than 200%, it's chocolate milk. Otherwise, if it's at least 200%, it's raspberry juice.
Milk will only affect Cookies Per Second (CpS) if you have at least one kitten upgrade. The first one, Kitten helpers, is unlocked at 50% milk and adds a
0.05 * milkmultiplier. (For instance, at 50% milk, your CpS will be multiplied by 1.025.)The other upgrades are:
Note: sometimes, for whatever reason, getting a new achievement while owning at least one Kitten upgrade will not change your CpS. To force the game to recalculate your CpS, go to your address bar and type in
javascript:Game.CalculateGains()orjavascript:Game.recalculateGains=1.Interestingly, a comment in the code says it should be 1% per achievement and that raspberry juice should be strawberry juice...