From the Canadian Customs website, this is what I found:

" 4. (1) Subject to subsection (2), the baggage that a person who is not a resident of Canada may temporarily import under tariff item No. 9803.00.00 consists of any goods that the person imports for their personal use and that are appropriate for their needs and consistent with the purpose, nature and duration of their intended stay in Canada, but does not include more than

(a) 1.5 L of wine or 1.14 L of spirits or 1.14 L of spirits and wine or 8.5 L of beer or ale;

(b) 200 cigarettes, 50 cigars, 200 g of manufactured tobacco and 200 tobacco sticks;"

"Guidelines and
General Information
Visitors to Canada

1. Visitors may bring with them certain goods for their own use in Canada as "personal baggage"
duty- and tax-free, provided all such items are reported at customs on arrival and are not subject to restriction.

Alcoholic Beverages and Tobacco Products

2. Personal baggage may include up to 1.14 litres of spirits or 1.5 litres of wine or 1.14 litres of wine and spirits or 8.5 litres (24 × 355 ml bottles or tins) of beer or ale, 200 cigarettes, 50 cigars, 200 g of manufactured tobacco, and 200 tobacco sticks. For a visit of short duration, these quantities may be limited to amounts which are appropriate in respect of the nature, purpose, and duration of the visit."



I found the information in two different places on a Canadian Customs site.  It looks like just over a liter of hard liquor, 1.5 litres of wine, or a case of beer.