BB/QB/DT (mature) all give LOTS of cookies when harvested based on your CpS and bank. This will tell you how many cookies you can get based on your bank and what combo to use to get your CpS high enough to harvest that amount of cookies.

In options, make sure Short Numbers are turned on.

Abbreviations for Frenzy, Elder Frenzy, and Building Special.

1. Turn the Golden Switch on (if needed).
2. Click a golden cookie for a buff.
3. Use the grimoire for another golden cookie buff.
4. Turn on the Shimmering Veil (if needed).
5. Click the harvest all button.
6. Get megatons of cookies.

In stats, under General.
  QB: Freeze the garden before checking.
  BB: Freeze the garden before checking.
  DT: No affect on CpS.

Used to determine the power of BS.
There is now a toggle to switch between using "lowest building #" or "total building #". Lowest is more accurate but less forgiving. Total is less accurate but more forgiving.

Used to determine how many plants will be harvested.

These are used to increase CpS at the time of harvest which in turn can make an easier combo usable. The numbers next to them are the CpS multiplier. If you have all heavenly upgrades then there is no need to change these numbers.