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Note 5 - Related Party Transactions/Activity (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Aug. 01, 2022
Jan. 01, 2017
Nov. 30, 2024
Nov. 30, 2024
Nov. 30, 2023
May 31, 2024
TriEnda Holdings LLC [Member]            
Related Party Transaction, Purchases from Related Party       $ 45,526 $ 0  
Related Party Transaction, Purchases from Related Party       348,884 150,189  
Yorktown [Member] | Grinding and Pelletizing Equipment [Member]            
Weekly Rental Expenses     $ 27,500      
Operating Lease, Expense       715,000 742,500  
Yorktown [Member] | Office Space Lease [Member]            
Operating Lease, Expense       37,500 36,450  
Monthly Rental Expense, Renewal   $ 6,250        
Greystone Real Estate L L C [Member]            
Operating Lease, Expense       267,000 267,000  
Greystone Real Estate L L C [Member] | Manufacturing Facilities Lease [Member]            
Lessee, Operating Lease, Term of Contract 10 years          
Lessee, Operating Lease, Renewal Term 5 years          
Monthly Rent Expense $ 44,500          
Monthly Rent Expense, Monthly Increase Every Fifth Year, Percent 5.00%          
TriEnda Holdings LLC [Member]            
Accounts Receivable, after Allowance for Credit Loss     449,228 449,228   $ 143,290
Green Plastic Pallets [Member]            
Related Party Transaction, Purchases from Related Party       139,230 $ 122,670  
Accounts Receivable, after Allowance for Credit Loss     $ 174,610 $ 174,610   $ 122,280